# Latest **URL:** https://forum.ipums.org/latest.md [Latest](https://forum.ipums.org/latest.md) · [Categories](https://forum.ipums.org/categories.md) --- ## [Welcome to The IPUMS Forum](https://forum.ipums.org/t/welcome-to-the-ipums-forum/7)
**Author:** [@system](https://forum.ipums.org/u/system)\ **Replies:** 0\ **Last updated:** [January 3, 2019, 3:19pm UTC](https://forum.ipums.org/t/welcome-to-the-ipums-forum/7 "2019-01-03T15:19:58Z")
This Forum allows users to seek more information about IPUMS data tools by submitting questions for IPUMS staff or fellow users to answer, or by searching topics for previous questions and answers. Topics are organiz… --- ## [Clarification on reuse of publicly available census questionnaires and derived data](https://forum.ipums.org/t/clarification-on-reuse-of-publicly-available-census-questionnaires-and-derived-data/7192)
**Author:** [@Yao\_Lu](https://forum.ipums.org/u/Yao_Lu)\ **Replies:** 4\ **Last updated:** [September 25, 2026, 6:07pm UTC](https://forum.ipums.org/t/clarification-on-reuse-of-publicly-available-census-questionnaires-and-derived-data/7192 "2026-09-25T18:07:38Z")
I have a question about research derived from the census questionnaires/documentation that are publicly accessible through IPUMS International ( IPUMS International ). This question concerns the publicly available census… --- ## [Clarification on 1930 San Francisco WARD codes 22–33](https://forum.ipums.org/t/clarification-on-1930-san-francisco-ward-codes-22-33/7193)
**Author:** [@HarshaD](https://forum.ipums.org/u/HarshaD)\ **Replies:** 0\ **Last updated:** [September 24, 2026, 8:15pm UTC](https://forum.ipums.org/t/clarification-on-1930-san-francisco-ward-codes-22-33/7193 "2026-09-24T20:15:25Z")
Hello, I am using the IPUMS USA 1930 5% sample (us1930b) to study San Francisco County. My SDA settings are: Row: MBPL Column: WARD Filters: STATEICP(71), COUNTYICP(750) Weight: PERWT The results include WARD codes … --- ## [Reweighting Households for Person-level Estimates](https://forum.ipums.org/t/reweighting-households-for-person-level-estimates/7184)
**Author:** [@THOMAS\_KELLEY-KEMPLE](https://forum.ipums.org/u/THOMAS_KELLEY-KEMPLE)\ **Replies:** 1\ **Last updated:** [September 24, 2026, 4:30pm UTC](https://forum.ipums.org/t/reweighting-households-for-person-level-estimates/7184 "2026-09-24T16:30:56Z")
I have an analysis where I’m trying to estimate the number of children in a state who reside in a household that gets SNAP benefits (ie. what percent of children from state X live in a SNAP household). Ordinarily, this i… --- ## [Calculating Standard Errors Using CPS Basic Monthly Microdata](https://forum.ipums.org/t/calculating-standard-errors-using-cps-basic-monthly-microdata/6408)
**Author:** [@Jacob\_Dominski](https://forum.ipums.org/u/Jacob_Dominski)\ **Replies:** 8\ **Last updated:** [September 22, 2026, 4:25am UTC](https://forum.ipums.org/t/calculating-standard-errors-using-cps-basic-monthly-microdata/6408 "2026-09-22T04:25:30Z")
Hi there. I am attempting to use the CPS basic monthly survey to examine employment trends by occupation. When calculating standard errors for monthly employment by occupation, I tried using the BLS’s Generalized Varianc… --- ## [What would be the best way to determine whether an increase in total employment for a given occupation is statistically significant?](https://forum.ipums.org/t/what-would-be-the-best-way-to-determine-whether-an-increase-in-total-employment-for-a-given-occupation-is-statistically-significant/7188)
**Author:** [@Kenneth\_Burchfiel](https://forum.ipums.org/u/Kenneth_Burchfiel)\ **Replies:** 2\ **Last updated:** [September 22, 2026, 2:06am UTC](https://forum.ipums.org/t/what-would-be-the-best-way-to-determine-whether-an-increase-in-total-employment-for-a-given-occupation-is-statistically-significant/7188 "2026-09-22T02:06:53Z")
I am interested in determining whether a given set of months had significantly lower employment relative to the most recent month of data for one of the occupations within the occ2010 variable. I think I’ve figured out h… --- ## [CITY codes vs FIPS codes](https://forum.ipums.org/t/city-codes-vs-fips-codes/7169)
**Author:** [@Robert\_Gebeloff](https://forum.ipums.org/u/Robert_Gebeloff)\ **Replies:** 1\ **Last updated:** [September 17, 2026, 3:43pm UTC](https://forum.ipums.org/t/city-codes-vs-fips-codes/7169 "2026-09-17T15:43:23Z")
This topic has come up before, and there is a guide for how to link modern sample city codes to published FIPS codes, but this generally includes only the largest cities. However, with the historical 100-percent data, t… --- ## [Issue with download\_extract:](https://forum.ipums.org/t/issue-with-download-extract/6754)
**Author:** [@Richard\_Liu](https://forum.ipums.org/u/Richard_Liu)\ **Replies:** 5\ **Last updated:** [September 17, 2026, 2:42pm UTC](https://forum.ipums.org/t/issue-with-download-extract/6754 "2026-09-17T14:42:22Z")
Hello all, I am trying to download the full set of CPS ASECs to study some longitudinal trends in income distributions. I seem to be able to submit the correct extract successfully. However, when I run the download\_extr… --- ## [IPUMS release of MEPS 2024 FYC data file (HC-256)](https://forum.ipums.org/t/ipums-release-of-meps-2024-fyc-data-file-hc-256/7173)
**Author:** [@Dennis\_Ruenger](https://forum.ipums.org/u/Dennis_Ruenger)\ **Replies:** 1\ **Last updated:** [September 15, 2026, 2:38pm UTC](https://forum.ipums.org/t/ipums-release-of-meps-2024-fyc-data-file-hc-256/7173 "2026-09-15T14:38:17Z")
AHRQ released the MEPS 2024 Full Year Consolidated file (HC-256) in August. Is there an estimated timeline for when the 2024 data will be available in IPUMS MEPS? Thanks! --- ## [Household interview time variables missing for Cameroon 2018](https://forum.ipums.org/t/household-interview-time-variables-missing-for-cameroon-2018/7171)
**Author:** [@Wen-Qi\_Cheong](https://forum.ipums.org/u/Wen-Qi_Cheong)\ **Replies:** 1\ **Last updated:** [September 11, 2026, 3:57pm UTC](https://forum.ipums.org/t/household-interview-time-variables-missing-for-cameroon-2018/7171 "2026-09-11T15:57:21Z")
Hi. I have a question regarding the household interview time variables in IPUMS-DHS. Household interview time variables HV801, HV802, and HV803 are available in DHS surveys starting in 2015. However, I noticed that the … --- ## [ACS 5-year topcode - updates?](https://forum.ipums.org/t/acs-5-year-topcode-updates/7155)
**Author:** [@mkb1521](https://forum.ipums.org/u/mkb1521)\ **Replies:** 5\ **Last updated:** [September 11, 2026, 2:47pm UTC](https://forum.ipums.org/t/acs-5-year-topcode-updates/7155 "2026-09-11T14:47:11Z")
Hello, I have a version of a 2008-2012 ACS variable topcodes that I downloaded in June 2019. In my download, each state-year observation has its own topcode (5 years x 52 states = 260 observations). However, currently o… --- ## [March 18 revision to the 2019-2023 5-year: the correction differs by survey year](https://forum.ipums.org/t/march-18-revision-to-the-2019-2023-5-year-the-correction-differs-by-survey-year/7167)
**Author:** [@CJ\_Libassi](https://forum.ipums.org/u/CJ_Libassi)\ **Replies:** 1\ **Last updated:** [September 4, 2026, 9:13pm UTC](https://forum.ipums.org/t/march-18-revision-to-the-2019-2023-5-year-the-correction-differs-by-survey-year/7167 "2026-09-04T21:13:51Z")
The March 18, 2026 revision note for the 2019-2023 5-year ACS/PRCS describes the pre-revision files as indexed to 2022 dollars, but a record-level comparison of the two vintages says the correction was not uniform across… --- ## [Is ipumsr compatible with MICS? If not, are there plans to add support?](https://forum.ipums.org/t/is-ipumsr-compatible-with-mics-if-not-are-there-plans-to-add-support/7163)
**Author:** [@Mar\_Nikiforova](https://forum.ipums.org/u/Mar_Nikiforova)\ **Replies:** 1\ **Last updated:** [September 2, 2026, 8:26pm UTC](https://forum.ipums.org/t/is-ipumsr-compatible-with-mics-if-not-are-there-plans-to-add-support/7163 "2026-09-02T20:26:18Z")
I’m starting a project that requires data from MICS, but I noticed that this collection does not have API support for extracting data yet. When I got an extract from the site manually, it consisted of.dat and .do files c… --- ## [Is it expected that microdata-based calculations will diverge from Census estimates?](https://forum.ipums.org/t/is-it-expected-that-microdata-based-calculations-will-diverge-from-census-estimates/7156)
**Author:** [@Kenneth\_Burchfiel](https://forum.ipums.org/u/Kenneth_Burchfiel)\ **Replies:** 2\ **Last updated:** [September 2, 2026, 7:19pm UTC](https://forum.ipums.org/t/is-it-expected-that-microdata-based-calculations-will-diverge-from-census-estimates/7156 "2026-09-02T19:19:14Z")
I am using IPUMS ACS5 2024 microdata to caculate PUMA-level sums of single men and women in their 30s. (I’m defining ‘single’ here as having a MARST value other than 1, 2, or 9.) To check my numbers, I also calculated si… --- ## [Tracking renting to owning households over time](https://forum.ipums.org/t/tracking-renting-to-owning-households-over-time/5596)
**Author:** [@Aziz\_Sunderji](https://forum.ipums.org/u/Aziz_Sunderji)\ **Replies:** 11\ **Last updated:** [September 2, 2026, 7:06pm UTC](https://forum.ipums.org/t/tracking-renting-to-owning-households-over-time/5596 "2026-09-02T19:06:20Z")
Hello! I am trying to determine the characteristics of lower income households who transition from renting their dwelling to owning, over time, using the panel aspect of the CPS data. Would a reasonable approach includ… --- ## [2025 ACS PUMS 1 Year Data Availability?](https://forum.ipums.org/t/2025-acs-pums-1-year-data-availability/7158)
**Author:** [@Bianca\_Dong](https://forum.ipums.org/u/Bianca_Dong)\ **Replies:** 1\ **Last updated:** [August 31, 2026, 7:58pm UTC](https://forum.ipums.org/t/2025-acs-pums-1-year-data-availability/7158 "2026-08-31T19:58:56Z")
Hello! When may we expect the 2025 ACS PUMS 1 year data to be available? Thank you. --- ## [Disability question wording for mobility and self-care](https://forum.ipums.org/t/disability-question-wording-for-mobility-and-self-care/7149)
**Author:** [@vicky\_virgin](https://forum.ipums.org/u/vicky_virgin)\ **Replies:** 3\ **Last updated:** [August 25, 2026, 9:49pm UTC](https://forum.ipums.org/t/disability-question-wording-for-mobility-and-self-care/7149 "2026-08-25T21:49:25Z")
Hello, I see that the DIFFCARE and DIFFMOB variables as described in IPUMS require a condition that lasts six months or more, while the ACS removed that condition beginning in 2008. I know that you harmonize variables o… --- ## [Togo 2013 IDHS identifier from Household Recode doesn't match with that in Woman Recode](https://forum.ipums.org/t/togo-2013-idhs-identifier-from-household-recode-doesnt-match-with-that-in-woman-recode/5863)
**Author:** [@isabel\_mcloughlin](https://forum.ipums.org/u/isabel_mcloughlin)\ **Replies:** 4\ **Last updated:** [August 25, 2026, 6:56pm UTC](https://forum.ipums.org/t/togo-2013-idhs-identifier-from-household-recode-doesnt-match-with-that-in-woman-recode/5863 "2026-08-25T18:56:55Z")
Hi. I am trying to link some records from IPUMS DHS Household Member Recode file to the Women’s recode file, I have records from Senegal 2015 and 2016, Benin 2017 and Togo 2013. The Togo 2013 idhshid in the household mem… --- ## [Unable to match monthly CPS Data for June and July 2026](https://forum.ipums.org/t/unable-to-match-monthly-cps-data-for-june-and-july-2026/7152)
**Author:** [@TCarroll1](https://forum.ipums.org/u/TCarroll1)\ **Replies:** 1\ **Last updated:** [August 25, 2026, 5:41pm UTC](https://forum.ipums.org/t/unable-to-match-monthly-cps-data-for-june-and-july-2026/7152 "2026-08-25T17:41:02Z")
I am unable to match observations in June and July 2026; did CPSIDP change? --- ## [For IPUMS. Where can I find the names of all slave holders in 1860 and the number of slaves they owned?](https://forum.ipums.org/t/for-ipums-where-can-i-find-the-names-of-all-slave-holders-in-1860-and-the-number-of-slaves-they-owned/416)
**Author:** [@jhsimpson](https://forum.ipums.org/u/jhsimpson)\ **Replies:** 3\ **Last updated:** [August 24, 2026, 6:27pm UTC](https://forum.ipums.org/t/for-ipums-where-can-i-find-the-names-of-all-slave-holders-in-1860-and-the-number-of-slaves-they-owned/416 "2026-08-24T18:27:13Z")
For IPUMS. Where can I find the names of all slave holders in 1860 and the number of slaves they owned? --- ## [Conflicting Tabulation in OWNERSHPD and RENT](https://forum.ipums.org/t/conflicting-tabulation-in-ownershpd-and-rent/7150)
**Author:** [@Maximilian\_Buchholz](https://forum.ipums.org/u/Maximilian_Buchholz)\ **Replies:** 2\ **Last updated:** [August 21, 2026, 11:15pm UTC](https://forum.ipums.org/t/conflicting-tabulation-in-ownershpd-and-rent/7150 "2026-08-21T23:15:24Z")
Hi y’all I’m wondering if someone can help clarify what’s going on in the attached image. I’ve removed households in group quarters and have recoded RENT following the guidelines in the documentation where “0” is NA, “1”… --- ## [When will the full 2024 NHIS CCS be available in IPUMS?](https://forum.ipums.org/t/when-will-the-full-2024-nhis-ccs-be-available-in-ipums/7151)
**Author:** [@vv28](https://forum.ipums.org/u/vv28)\ **Replies:** 1\ **Last updated:** [August 20, 2026, 8:51pm UTC](https://forum.ipums.org/t/when-will-the-full-2024-nhis-ccs-be-available-in-ipums/7151 "2026-08-20T20:51:20Z")
The 2024 NHIS Cancer Control Supplement (CCS) includes several questions that have not been made available in IPUMS. I was wondering when IPUMS plans to make this data available? Thank you! --- ## [Merging IPUMS CPS records to "raw" Basic Monthly Files in 1976-1977](https://forum.ipums.org/t/merging-ipums-cps-records-to-raw-basic-monthly-files-in-1976-1977/7141)
**Author:** [@Christopher\_Foote](https://forum.ipums.org/u/Christopher_Foote)\ **Replies:** 2\ **Last updated:** [August 17, 2026, 1:35pm UTC](https://forum.ipums.org/t/merging-ipums-cps-records-to-raw-basic-monthly-files-in-1976-1977/7141 "2026-08-17T13:35:33Z")
I would like to merge IPUMS CPS records to unharmonized “raw” Basic Monthly Files back to 1976. There are a number of forum questions that relate to merging records starting in (say) 1989, but I couldn’t find any questio… --- ## [Top code for INCSUPP, INCSS (documentation question)](https://forum.ipums.org/t/top-code-for-incsupp-incss-documentation-question/7143)
**Author:** [@Sheela\_Kennedy](https://forum.ipums.org/u/Sheela_Kennedy)\ **Replies:** 1\ **Last updated:** [August 11, 2026, 7:29pm UTC](https://forum.ipums.org/t/top-code-for-incsupp-incss-documentation-question/7143 "2026-08-11T19:29:24Z")
Continuing the discussion from Bottom codes for INCINVST in ACS: Hi, INCSUPP indicates that there is no topcode for ACS for 2006-onwards. But, at least in 2023, there does seem to be a topcode, per the 2023 top code ex… --- ## [Are there files linking nominal counties to units which are consistent over time?](https://forum.ipums.org/t/are-there-files-linking-nominal-counties-to-units-which-are-consistent-over-time/2264)
**Author:** [@rdahis](https://forum.ipums.org/u/rdahis)\ **Replies:** 6\ **Last updated:** [August 6, 2026, 12:37pm UTC](https://forum.ipums.org/t/are-there-files-linking-nominal-counties-to-units-which-are-consistent-over-time/2264 "2026-08-06T12:37:24Z")
NHGIS provides great shapefiles since 1790, which show county boundaries nominally, as they were in the time of each Census. But I cannot find data or code that makes such boundaries consistent over time. I am searching… --- ## [Guidance on using CBPOVERTY to replicate published Census ACS poverty tables](https://forum.ipums.org/t/guidance-on-using-cbpoverty-to-replicate-published-census-acs-poverty-tables/7132)
**Author:** [@Jori\_Kandra](https://forum.ipums.org/u/Jori_Kandra)\ **Replies:** 1\ **Last updated:** [August 4, 2026, 10:20pm UTC](https://forum.ipums.org/t/guidance-on-using-cbpoverty-to-replicate-published-census-acs-poverty-tables/7132 "2026-08-04T22:20:00Z")
Hello forum, I am calculating the official poverty rate using the ACS data and I found a discrepancy between the calculated estimates and the published Census ACS table when using CBPOVERTY in a particular way. Accordi… --- ## [How to download ACS 2024 datasets](https://forum.ipums.org/t/how-to-download-acs-2024-datasets/7133)
**Author:** [@Sampat\_Saraf](https://forum.ipums.org/u/Sampat_Saraf)\ **Replies:** 1\ **Last updated:** [July 31, 2026, 3:01pm UTC](https://forum.ipums.org/t/how-to-download-acs-2024-datasets/7133 "2026-07-31T15:01:50Z")
IPUMS Staff- I was using Missing Key for getting 2023 ACS data but now want to get data for 2024 ACS. What is the equivalent api call --- ## [HI in 2024 tract Shapefile](https://forum.ipums.org/t/hi-in-2024-tract-shapefile/7126)
**Author:** [@Adam\_Conner-Sax](https://forum.ipums.org/u/Adam_Conner-Sax)\ **Replies:** 4\ **Last updated:** [July 30, 2026, 3:04pm UTC](https://forum.ipums.org/t/hi-in-2024-tract-shapefile/7126 "2026-07-30T15:04:05Z")
Hi. I’m using the tigerline shapefile to map the tract data onto other regions. The 2024 tract shapefile has HI…in a different place. I recognize that maybe this is a projection thing or something. But when I look at 202… --- ## [Correct replicate weight for SPMWT (SPM unit-level variance estimation)](https://forum.ipums.org/t/correct-replicate-weight-for-spmwt-spm-unit-level-variance-estimation/7129)
**Author:** [@Erika\_Lin](https://forum.ipums.org/u/Erika_Lin)\ **Replies:** 1\ **Last updated:** [July 27, 2026, 3:39pm UTC](https://forum.ipums.org/t/correct-replicate-weight-for-spmwt-spm-unit-level-variance-estimation/7129 "2026-07-27T15:39:39Z")
I’m calculating survey-weighted childcare cost estimates using SPMCHXPNS, weighted by SPMWT (SPM unit/family-level weight), and I need to compute standard errors that account for the CPS complex sample design. Should I p… --- ## [2026 Fertility and Marriage Supplement](https://forum.ipums.org/t/2026-fertility-and-marriage-supplement/7130)
**Author:** [@Deniz\_Gorgulu](https://forum.ipums.org/u/Deniz_Gorgulu)\ **Replies:** 1\ **Last updated:** [July 27, 2026, 3:39pm UTC](https://forum.ipums.org/t/2026-fertility-and-marriage-supplement/7130 "2026-07-27T15:39:08Z")
Hi, Does IPUMS have an estimated release date for the 2026 Fertility and Marriage Supplement sample? The June 2026 monthly data has already been released, so I was expecting the supplement to come out alongside it. Tha… [Next page](https://forum.ipums.org/latest.md?page=1)