# General **URL:** https://forum.ipums.org/c/general/1.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… --- ## [Coverage of counties in 1950 census onwards](https://forum.ipums.org/t/coverage-of-counties-in-1950-census-onwards/7209)
**Author:** [@Exequiel\_Caceres](https://forum.ipums.org/u/Exequiel_Caceres)\ **Replies:** 1\ **Last updated:** [October 16, 2026, 4:18pm UTC](https://forum.ipums.org/t/coverage-of-counties-in-1950-census-onwards/7209 "2026-10-16T16:18:32Z")
I have been working with the 1930 and 1940 censuses, in Stata format, at the individual level. Then, I have collapsed the data to the county level easily and have obtained what seems to be all counties at the time. I wa… --- ## [Codebook for MIGPUMA1 and MIGPUMANOW](https://forum.ipums.org/t/codebook-for-migpuma1-and-migpumanow/7199)
**Author:** [@Adam\_Bickford](https://forum.ipums.org/u/Adam_Bickford)\ **Replies:** 1\ **Last updated:** [October 7, 2026, 7:04pm UTC](https://forum.ipums.org/t/codebook-for-migpuma1-and-migpumanow/7199 "2026-10-07T19:04:59Z")
Does a listing of the PUMA names for the MIGPUMA 1 and MIGPUMANOW variables exist? I am working with the post 2020 ACS data, so the 2020 PUMA names are what I am looking for. --- ## [Reconsiling MIGPUMANOW with Census PUMS values](https://forum.ipums.org/t/reconsiling-migpumanow-with-census-pums-values/7200)
**Author:** [@Adam\_Bickford](https://forum.ipums.org/u/Adam_Bickford)\ **Replies:** 1\ **Last updated:** [October 6, 2026, 7:42pm UTC](https://forum.ipums.org/t/reconsiling-migpumanow-with-census-pums-values/7200 "2026-10-06T19:42:47Z")
I am trying to map the values of the MIGPUMANOW variables for Colorado using the 2024 ACS data. I started with the puma\_migpuma1\_pwpuma00\_2020 crosswalk. There are multiple values in the MIGPUMANOW that are not listed … --- ## [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? --- ## [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”… --- ## [Using CPS monthly occupation data and how to deal with months N=0?](https://forum.ipums.org/t/using-cps-monthly-occupation-data-and-how-to-deal-with-months-n-0/7125)
**Author:** [@Rogelio\_Saenz](https://forum.ipums.org/u/Rogelio_Saenz)\ **Replies:** 2\ **Last updated:** [July 24, 2026, 3:59pm UTC](https://forum.ipums.org/t/using-cps-monthly-occupation-data-and-how-to-deal-with-months-n-0/7125 "2026-07-24T15:59:20Z")
Hi, I am using data for the five months between Feb. and June 2026 and for a few earlier years with the same months. For each occupation, for a given year, I divide the total across the 5 months to get an estimate of wor… --- ## [Inquiry regarding the availability of male anthropometric data in IPUMS DHS](https://forum.ipums.org/t/inquiry-regarding-the-availability-of-male-anthropometric-data-in-ipums-dhs/7119)
**Author:** [@704855703](https://forum.ipums.org/u/704855703)\ **Replies:** 3\ **Last updated:** [July 13, 2026, 2:36pm UTC](https://forum.ipums.org/t/inquiry-regarding-the-availability-of-male-anthropometric-data-in-ipums-dhs/7119 "2026-07-13T14:36:41Z")
I am currently conducting a cross-country empirical study on population health and economic outcomes in Sub-Saharan Africa using the IPUMS DHS datasets. While exploring the variables, I noticed that female anthropometri… --- ## [How to construct a family file with acs data](https://forum.ipums.org/t/how-to-construct-a-family-file-with-acs-data/7091)
**Author:** [@olehw](https://forum.ipums.org/u/olehw)\ **Replies:** 2\ **Last updated:** [June 11, 2026, 4:27pm UTC](https://forum.ipums.org/t/how-to-construct-a-family-file-with-acs-data/7091 "2026-06-11T16:27:47Z")
Does anybody know how to construct a family file with ACS data: HH variables and person data of all members of the HH in one record? --- ## [Number of Millennial Homeowners by State](https://forum.ipums.org/t/number-of-millennial-homeowners-by-state/4252)
**Author:** [@Matthew\_Mardis](https://forum.ipums.org/u/Matthew_Mardis)\ **Replies:** 3\ **Last updated:** [June 9, 2026, 10:51am UTC](https://forum.ipums.org/t/number-of-millennial-homeowners-by-state/4252 "2026-06-09T10:51:16Z")
I am hoping to determine how many total millennial homeowners (ages 23-38 in 2019) there are in the U.S. by state (using as recent of data as possible). Could you possibly help me determine which variables would be the … --- ## [Urgent Request for Account Approval](https://forum.ipums.org/t/urgent-request-for-account-approval/7089)
**Author:** [@ruyin\_li](https://forum.ipums.org/u/ruyin_li)\ **Replies:** 1\ **Last updated:** [June 8, 2026, 1:11pm UTC](https://forum.ipums.org/t/urgent-request-for-account-approval/7089 "2026-06-08T13:11:35Z")
Hi IPUMS Team, I hope this email finds you well. My name is Ru yin Li, a graduate student in Economics at Shanghai University of Finance and Economics. I submitted my account application on 6.4, and my account has been … --- ## [Long-time homeowners IPUMS vs official Census stats](https://forum.ipums.org/t/long-time-homeowners-ipums-vs-official-census-stats/7068)
**Author:** [@Kasturi\_Pananjady](https://forum.ipums.org/u/Kasturi_Pananjady)\ **Replies:** 6\ **Last updated:** [June 5, 2026, 6:41pm UTC](https://forum.ipums.org/t/long-time-homeowners-ipums-vs-official-census-stats/7068 "2026-06-05T18:41:52Z")
Hi! I’m analyzing the characteristics of long-term homeowners in Baltimore in IPUMS, and I’m confused by why I’m seeing a big difference between IPUMS and the official Census stats in some cases. For example, I’m intere… --- ## [Stata Logit Regression with Multiple Imputated Variables INCIMP1-5](https://forum.ipums.org/t/stata-logit-regression-with-multiple-imputated-variables-incimp1-5/7083)
**Author:** [@Lilian\_Brusic](https://forum.ipums.org/u/Lilian_Brusic)\ **Replies:** 1\ **Last updated:** [May 27, 2026, 2:38pm UTC](https://forum.ipums.org/t/stata-logit-regression-with-multiple-imputated-variables-incimp1-5/7083 "2026-05-27T14:38:51Z")
Hello All, I am using the multiple imputated variables incimp1 through incimp5 for my logit regression. I am wondering if anyone is familiar with doing this in Stata and could provide feedback on my code. Is this an app… --- ## [How can I obtain access to Sierra Leone data?](https://forum.ipums.org/t/how-can-i-obtain-access-to-sierra-leone-data/7078)
**Author:** [@Nnenna\_Asidianya](https://forum.ipums.org/u/Nnenna_Asidianya)\ **Replies:** 1\ **Last updated:** [May 18, 2026, 10:31pm UTC](https://forum.ipums.org/t/how-can-i-obtain-access-to-sierra-leone-data/7078 "2026-05-18T22:31:11Z")
I am a student at University of Toronto. I joined and realized you need to obtain permission to extract the data sets but I am unsure as to how fast they process our requests. Is there a way to contact them to let them k… --- ## [UNION variable missing from online data system](https://forum.ipums.org/t/union-variable-missing-from-online-data-system/7064)
**Author:** [@Jessica\_Mason](https://forum.ipums.org/u/Jessica_Mason)\ **Replies:** 1\ **Last updated:** [May 5, 2026, 2:48pm UTC](https://forum.ipums.org/t/union-variable-missing-from-online-data-system/7064 "2026-05-05T14:48:20Z")
I was hoping to do a quick analysis related to union membership on the online data analysis system, but when I try to add the UNION variable the system gives a “Cannot find specified variable” error. This is happening b… --- ## [Genealogy Research back to 1850 Census Data](https://forum.ipums.org/t/genealogy-research-back-to-1850-census-data/7038)
**Author:** [@Andrew\_Askey](https://forum.ipums.org/u/Andrew_Askey)\ **Replies:** 4\ **Last updated:** [May 1, 2026, 8:30pm UTC](https://forum.ipums.org/t/genealogy-research-back-to-1850-census-data/7038 "2026-05-01T20:30:44Z")
I am interested in building an AI to parse Census data back to 1850. How do I get access to any csv files you have created. I have and account there at IPUMS but can’t find there treasure trove that Google Gemini tell me… --- ## [IPUMS CPS Dissertation Citation](https://forum.ipums.org/t/ipums-cps-dissertation-citation/7028)
**Author:** [@Eve\_Hughes](https://forum.ipums.org/u/Eve_Hughes)\ **Replies:** 1\ **Last updated:** [April 2, 2026, 9:53pm UTC](https://forum.ipums.org/t/ipums-cps-dissertation-citation/7028 "2026-04-02T21:53:09Z")
Hi, I am wondering if unpublished dissertations must be added to the IPUMS bibliography when they make use of IPUMS CPS? Thanks in advance! --- ## [DHS Variables available in IPUMS-DHS but not in the original DHS files](https://forum.ipums.org/t/dhs-variables-available-in-ipums-dhs-but-not-in-the-original-dhs-files/7017)
**Author:** [@Maria\_Louisa\_Pohl](https://forum.ipums.org/u/Maria_Louisa_Pohl)\ **Replies:** 2\ **Last updated:** [March 27, 2026, 9:59pm UTC](https://forum.ipums.org/t/dhs-variables-available-in-ipums-dhs-but-not-in-the-original-dhs-files/7017 "2026-03-27T21:59:38Z")
Hi, I am currently exploring land/home ownership of women in sub-Saharan Africa using DHS data. I have noticed that for some samples (e.g., Malawi 2010-11; Tanzania 2004-05) the variables v745a and v745b (“femownhouse” … --- ## [Questions about NAICS codes (INDNAICS) in the 2000 Census and ACS/PRCS Samples from 2000 Onward](https://forum.ipums.org/t/questions-about-naics-codes-indnaics-in-the-2000-census-and-acs-prcs-samples-from-2000-onward/6996)
**Author:** [@YJH](https://forum.ipums.org/u/YJH)\ **Replies:** 1\ **Last updated:** [March 13, 2026, 2:15pm UTC](https://forum.ipums.org/t/questions-about-naics-codes-indnaics-in-the-2000-census-and-acs-prcs-samples-from-2000-onward/6996 "2026-03-13T14:15:15Z")
Hello, I have one question about the NAICS code (INDNAICS variable) crosswalk that was used in the ACS data. Based on this crosswalk (listed here: IPUMS USA | Industry (IND) and NAICS Industry (INDNAICS) Crosswalk 2000 … --- ## [Comparing Prime Age Employment Across Census and ACS](https://forum.ipums.org/t/comparing-prime-age-employment-across-census-and-acs/6967)
**Author:** [@Shane\_Nordquist](https://forum.ipums.org/u/Shane_Nordquist)\ **Replies:** 1\ **Last updated:** [February 24, 2026, 5:35pm UTC](https://forum.ipums.org/t/comparing-prime-age-employment-across-census-and-acs/6967 "2026-02-24T17:35:45Z")
When calculating nationwide employment among people aged 25-54, the values I get for the 1980-2000 census samples are almost exactly in line with CPS-derived estimates, found here for comparison Employment Level - 25-54 … --- ## [1980 Census of Population. Vol. 1. Characteristics of the Population. Ch. C/D](https://forum.ipums.org/t/1980-census-of-population-vol-1-characteristics-of-the-population-ch-c-d/6965)
**Author:** [@Emma\_Lonstrup](https://forum.ipums.org/u/Emma_Lonstrup)\ **Replies:** 1\ **Last updated:** [February 19, 2026, 7:42pm UTC](https://forum.ipums.org/t/1980-census-of-population-vol-1-characteristics-of-the-population-ch-c-d/6965 "2026-02-19T19:42:31Z")
I am trying to download the “1980 Census of Population. Vol. 1. Characteristics of the Population. Ch. C/D. Detailed Social and Economic Characteristics” pdfs as I need the children ever born data by state, but they don’… --- ## [CPSFAMSIZE empty on my data extract](https://forum.ipums.org/t/cpsfamsize-empty-on-my-data-extract/6964)
**Author:** [@Charalampos\_Charalam](https://forum.ipums.org/u/Charalampos_Charalam)\ **Replies:** 1\ **Last updated:** [February 19, 2026, 7:40pm UTC](https://forum.ipums.org/t/cpsfamsize-empty-on-my-data-extract/6964 "2026-02-19T19:40:12Z")
When loaded in R, for samples 2019-2023 and variable CPSFAMSIZE, the value NIU only shows up in the data frame for certain rows, the rest are completely empty showing no value. Is it a faulty data extract? Thank you for … --- ## [Significant not in universe for sample](https://forum.ipums.org/t/significant-not-in-universe-for-sample/6961)
**Author:** [@Lilian\_Brusic](https://forum.ipums.org/u/Lilian_Brusic)\ **Replies:** 2\ **Last updated:** [February 17, 2026, 3:05am UTC](https://forum.ipums.org/t/significant-not-in-universe-for-sample/6961 "2026-02-17T03:05:34Z")
Hello all, I am working on a project that includes quantifying the number of adults impacted by cardiovascular disease. We’re using data from 1997-2018 and the samples cheartdiev, heartconev, strokev, and heartattev, wh… --- ## [ACS 1 year - METRO variable](https://forum.ipums.org/t/acs-1-year-metro-variable/6957)
**Author:** [@Jose\_Funes](https://forum.ipums.org/u/Jose_Funes)\ **Replies:** 4\ **Last updated:** [February 16, 2026, 4:35pm UTC](https://forum.ipums.org/t/acs-1-year-metro-variable/6957 "2026-02-16T16:35:59Z")
I am working with the METRO variable to classify each observation based on the table below. However, the dataset only includes values from 0 to 4, which do not match the options listed in the table. Please advise. 1 … --- ## [IPUMS CPS error submitting extract](https://forum.ipums.org/t/ipums-cps-error-submitting-extract/6947)
**Author:** [@Diego\_Silva](https://forum.ipums.org/u/Diego_Silva)\ **Replies:** 1\ **Last updated:** [February 5, 2026, 8:00pm UTC](https://forum.ipums.org/t/ipums-cps-error-submitting-extract/6947 "2026-02-05T20:00:18Z")
Good day IPUMS team, I am having an issue downloading IPUMS CPS data this morning. I have tried different sample sizes a few times and have not been able to get the query to work. Please help! --- ## [Reason for working a second job](https://forum.ipums.org/t/reason-for-working-a-second-job/6935)
**Author:** [@Katharine\_Abraham](https://forum.ipums.org/u/Katharine_Abraham)\ **Replies:** 1\ **Last updated:** [January 30, 2026, 7:18pm UTC](https://forum.ipums.org/t/reason-for-working-a-second-job/6935 "2026-01-30T19:18:36Z")
The periodic Work Schedules Supplement includes a question about the reasons a person worked a second job. I see a number of variables from the Work Schedules Supplement in the database (variable names beginning with WS)… --- ## [Timeline for availability of 2024 CPS Food Security Supplement](https://forum.ipums.org/t/timeline-for-availability-of-2024-cps-food-security-supplement/6934)
**Author:** [@Mark\_Edwards](https://forum.ipums.org/u/Mark_Edwards)\ **Replies:** 1\ **Last updated:** [January 28, 2026, 11:00pm UTC](https://forum.ipums.org/t/timeline-for-availability-of-2024-cps-food-security-supplement/6934 "2026-01-28T23:00:00Z")
When will the 2024 CPS Food Security Supplement be available? --- ## [Not in Labor Force, Unemployed](https://forum.ipums.org/t/not-in-labor-force-unemployed/6931)
**Author:** [@Michael\_Cwikielnik](https://forum.ipums.org/u/Michael_Cwikielnik)\ **Replies:** 1\ **Last updated:** [January 28, 2026, 5:48pm UTC](https://forum.ipums.org/t/not-in-labor-force-unemployed/6931 "2026-01-28T17:48:51Z")
Hello where can I find the IPUMS definition of Not in Labor Force and Unemployed for the employment variables? Thank you! --- ## [ASEC data from March only?](https://forum.ipums.org/t/asec-data-from-march-only/6929)
**Author:** [@Annie\_Alexander](https://forum.ipums.org/u/Annie_Alexander)\ **Replies:** 1\ **Last updated:** [January 23, 2026, 8:50am UTC](https://forum.ipums.org/t/asec-data-from-march-only/6929 "2026-01-23T08:50:09Z")
I’m new to CPS data so I’m wondering if ASEC data is only from the month of March? So if I am using ASEC data for each year it is from March of that year only? Or is it an annual average? And is 2025 data just from Marc… --- ## [\-666666666 for census tract real median family income 2019-2023 ACS estimates](https://forum.ipums.org/t/666666666-for-census-tract-real-median-family-income-2019-2023-acs-estimates/6932)
**Author:** [@Kelsey\_O\_Hollaren](https://forum.ipums.org/u/Kelsey_O_Hollaren)\ **Replies:** 3\ **Last updated:** [January 22, 2026, 10:25pm UTC](https://forum.ipums.org/t/666666666-for-census-tract-real-median-family-income-2019-2023-acs-estimates/6932 "2026-01-22T22:25:30Z")
Hi all, I’m working with 2019-2023 five-year ACS data for census tracts in LA City. I noticed that several census tracts have a reported real median family income of -666666666. I’m assuming this means missing or censor… [Next page](https://forum.ipums.org/c/general/1.md?page=1)