# NHGIS **URL:** https://forum.ipums.org/c/nhgis/26.md?page=3 [Latest](https://forum.ipums.org/latest.md) · [Categories](https://forum.ipums.org/categories.md) **Page:** 4 --- ## [Character count of GISJOIN](https://forum.ipums.org/t/character-count-of-gisjoin/5314)
**Author:** [@Lauren\_Cater](https://forum.ipums.org/u/Lauren_Cater)\ **Replies:** 1\ **Last updated:** [June 2, 2023, 7:20pm UTC](https://forum.ipums.org/t/character-count-of-gisjoin/5314 "2023-06-02T19:20:21Z")
I am working with historical tract data from the 1960s to the present. I have noticed that the number of characters in the GISJOIN field varies (either 12 or 14 characters). My understanding is that the GISJOIN field is … --- ## [2020 Demographic Profile and DHC](https://forum.ipums.org/t/2020-demographic-profile-and-dhc/5303)
**Author:** [@Christina\_Spielman](https://forum.ipums.org/u/Christina_Spielman)\ **Replies:** 1\ **Last updated:** [May 26, 2023, 1:27pm UTC](https://forum.ipums.org/t/2020-demographic-profile-and-dhc/5303 "2023-05-26T13:27:01Z")
Will you make available the newly released Demographic Profile and Demographic and Housing Characteristics data sets published today by the Census Bureau? If so, any idea when they might be available on IPUMS? --- ## [No state or county information in the ZCTA boundaries - what's up?](https://forum.ipums.org/t/no-state-or-county-information-in-the-zcta-boundaries-whats-up/5300)
**Author:** [@Corey\_Day](https://forum.ipums.org/u/Corey_Day)\ **Replies:** 3\ **Last updated:** [May 25, 2023, 7:02pm UTC](https://forum.ipums.org/t/no-state-or-county-information-in-the-zcta-boundaries-whats-up/5300 "2023-05-25T19:02:05Z")
I recently downloaded ZCTA boundaries to replicate work I previously did at the tract level, but I am finding that the ZCTA boundaries do not include any information about the state or county for each ZCTA. This is diffe… --- ## [Joining longitudinal census data with spatial data](https://forum.ipums.org/t/joining-longitudinal-census-data-with-spatial-data/5283)
**Author:** [@Lauren\_Cater](https://forum.ipums.org/u/Lauren_Cater)\ **Replies:** 2\ **Last updated:** [May 23, 2023, 1:13am UTC](https://forum.ipums.org/t/joining-longitudinal-census-data-with-spatial-data/5283 "2023-05-23T01:13:11Z")
I am working with a dataset containing locations at different spatial levels (county, tract, block group). Each location is associated with a FIPS code and a specific year (between 1910 and 2010). For each location, I w… --- ## [Crosswalk Occupation Across Decades](https://forum.ipums.org/t/crosswalk-occupation-across-decades/5285)
**Author:** [@James\_Harrison](https://forum.ipums.org/u/James_Harrison)\ **Replies:** 1\ **Last updated:** [May 22, 2023, 9:25pm UTC](https://forum.ipums.org/t/crosswalk-occupation-across-decades/5285 "2023-05-22T21:25:23Z")
Hello, I am trying to track changes in occupational composition by ethnicity from 1970-2000 at the county level in NHGIS (using datasets 1970\_Cnt4Pb, 1980\_STF4Pb, 1990\_STF4b, and 2000\_SF4). However, the occupational brea… --- ## [Tract Crosswalk Error for iPUMS and Census?](https://forum.ipums.org/t/tract-crosswalk-error-for-ipums-and-census/5266)
**Author:** [@Greg\_Oliven](https://forum.ipums.org/u/Greg_Oliven)\ **Replies:** 2\ **Last updated:** [May 6, 2023, 10:53pm UTC](https://forum.ipums.org/t/tract-crosswalk-error-for-ipums-and-census/5266 "2023-05-06T22:53:57Z")
Hi, in your 2010-2020 block group to tract crosswalk here: https://www.nhgis.org/geographic-crosswalks, there appears to be an error. I found the same error here: https://www2.census.gov/geo/docs/maps-data/data/rel2020/… --- ## [Mississippi river in1860 state gis](https://forum.ipums.org/t/mississippi-river-in1860-state-gis/5233)
**Author:** [@Zhaoting\_Wang](https://forum.ipums.org/u/Zhaoting_Wang)\ **Replies:** 1\ **Last updated:** [April 18, 2023, 10:07pm UTC](https://forum.ipums.org/t/mississippi-river-in1860-state-gis/5233 "2023-04-18T22:07:30Z")
I used r software to draw a map of US state boundaries with the data of 1860, and I wanted to draw the Mississippi River on this map. I observed that the state boundary data of 1860 provided by nhgis could show the Missi… --- ## [2009 5-year ACS CBG data source?](https://forum.ipums.org/t/2009-5-year-acs-cbg-data-source/5201)
**Author:** [@Glenn\_Sheriff](https://forum.ipums.org/u/Glenn_Sheriff)\ **Replies:** 5\ **Last updated:** [March 28, 2023, 5:03pm UTC](https://forum.ipums.org/t/2009-5-year-acs-cbg-data-source/5201 "2023-03-28T17:03:53Z")
I can download 2009 5-year ACS CBG data (eg B25003) for Miami-Dade county FL from IPUMS (yay!), but I cannot seem to access CBG-level ACS data from the Census website directly (FTP, API, etc.) until 2013. Do you know why… --- ## [When will NHIS 2020 be released?](https://forum.ipums.org/t/when-will-nhis-2020-be-released/4292)
**Author:** [@qian.851](https://forum.ipums.org/u/qian.851)\ **Replies:** 4\ **Last updated:** [March 24, 2023, 6:42pm UTC](https://forum.ipums.org/t/when-will-nhis-2020-be-released/4292 "2023-03-24T18:42:08Z")
To whom it may concern, When will NHIS 2020 be available on IPUMS? Thanks. Yue --- ## [Meaning of "0" Location Encoding](https://forum.ipums.org/t/meaning-of-0-location-encoding/5182)
**Author:** [@Ryan\_Perry](https://forum.ipums.org/u/Ryan_Perry)\ **Replies:** 7\ **Last updated:** [March 23, 2023, 3:26pm UTC](https://forum.ipums.org/t/meaning-of-0-location-encoding/5182 "2023-03-23T15:26:35Z")
Hello! I hope this message finds you well. What does is mean when census\_tract\_2010 and county\_code\_2010 are equal to zero? Does this mean that these locations are missing or no longer available? Trying to merge with ot… --- ## [Block-level crosswalk direction (one way or both ways?)](https://forum.ipums.org/t/block-level-crosswalk-direction-one-way-or-both-ways/5151)
**Author:** [@Seunghoon\_Lee](https://forum.ipums.org/u/Seunghoon_Lee)\ **Replies:** 3\ **Last updated:** [March 7, 2023, 3:14am UTC](https://forum.ipums.org/t/block-level-crosswalk-direction-one-way-or-both-ways/5151 "2023-03-07T03:14:17Z")
Hi, I’m trying to connect the population variable from 1990 to 2020 at the census block level using 2010 as a reference year. I downloaded the crosswalk file to that end (e.g., Blocks → Blocks: GISJOIN Identifiers for 1… --- ## [Birthplace for 1940 Census](https://forum.ipums.org/t/birthplace-for-1940-census/5141)
**Author:** [@dkopf](https://forum.ipums.org/u/dkopf)\ **Replies:** 1\ **Last updated:** [March 6, 2023, 5:39pm UTC](https://forum.ipums.org/t/birthplace-for-1940-census/5141 "2023-03-06T17:39:44Z")
Birthplace, mother’s birthplace and father’s birthplace are all available in IPUMS USA, but as far as I can tell, it’s not possible to grab that data by Census Tract for NHGIS for 1880 to 1970. Why is that? --- ## [Where (or how) to find population density at census tract level using NHGIS?](https://forum.ipums.org/t/where-or-how-to-find-population-density-at-census-tract-level-using-nhgis/5125)
**Author:** [@Adriana\_Castillo\_Cas](https://forum.ipums.org/u/Adriana_Castillo_Cas)\ **Replies:** 1\ **Last updated:** [February 25, 2023, 12:52am UTC](https://forum.ipums.org/t/where-or-how-to-find-population-density-at-census-tract-level-using-nhgis/5125 "2023-02-25T00:52:05Z")
Dear all, I was wondering if you can please guide me how I can find (or estimate) a shapefile with population density at the census tract level for Minnesota? Any help would be greatly appreciated. Many thanks, --- ## [1990 Voting Districts - What do the asterisks represent?](https://forum.ipums.org/t/1990-voting-districts-what-do-the-asterisks-represent/5131)
**Author:** [@Jessica\_Cigna](https://forum.ipums.org/u/Jessica_Cigna)\ **Replies:** 1\ **Last updated:** [February 24, 2023, 4:25pm UTC](https://forum.ipums.org/t/1990-voting-districts-what-do-the-asterisks-represent/5131 "2023-02-24T16:25:32Z")
Hello, I downloaded the 1990 Voting Districts file and am looking specifically at Rhode Island data. I’m curious what the asterisks represent in the “Name” field. Thanks! Jess --- ## [Missing place-level data for some states](https://forum.ipums.org/t/missing-place-level-data-for-some-states/5127)
**Author:** [@pmdowney](https://forum.ipums.org/u/pmdowney)\ **Replies:** 1\ **Last updated:** [February 22, 2023, 1:23pm UTC](https://forum.ipums.org/t/missing-place-level-data-for-some-states/5127 "2023-02-22T13:23:51Z")
Hello, I’m trying to download some basic time series tables for PLACE over time. Unfortunately, it seems that for some states, some actual PLACE’s don’t appear in the data, and I can’t seem to figure out why. As one ex… --- ## [Issue with MLP Linked Data Downloads](https://forum.ipums.org/t/issue-with-mlp-linked-data-downloads/5110)
**Author:** [@Heather\_Bloom](https://forum.ipums.org/u/Heather_Bloom)\ **Replies:** 2\ **Last updated:** [February 16, 2023, 2:56pm UTC](https://forum.ipums.org/t/issue-with-mlp-linked-data-downloads/5110 "2023-02-16T14:56:44Z")
I am trying to download census information on population in Omaha, Nebraska from 1860-1940. I am working on my dissertation, which is on retail decentralization in Omaha, Nebraska. I am trying to compare population mov… --- ## [Year of Entry, 1980, Census Tract Level](https://forum.ipums.org/t/year-of-entry-1980-census-tract-level/5105)
**Author:** [@Nathan\_Schiff](https://forum.ipums.org/u/Nathan_Schiff)\ **Replies:** 2\ **Last updated:** [February 10, 2023, 3:20pm UTC](https://forum.ipums.org/t/year-of-entry-1980-census-tract-level/5105 "2023-02-10T15:20:01Z")
I am looking for year of entry data at the census tract level for 1980. I can find it for 1970, 1990, 2000, and in the ACS five year estimates, but it appears to be missing for 1980. This is strange because there is a ye… --- ## [Using 2010–2020 Crosswalk Files for Intercensal ACS?](https://forum.ipums.org/t/using-2010-2020-crosswalk-files-for-intercensal-acs/5087)
**Author:** [@Noah\_Smith](https://forum.ipums.org/u/Noah_Smith)\ **Replies:** 3\ **Last updated:** [January 30, 2023, 10:05pm UTC](https://forum.ipums.org/t/using-2010-2020-crosswalk-files-for-intercensal-acs/5087 "2023-01-30T22:05:53Z")
I am interested in harmonizing data at the census-tract level for the 5-year ACS data (ACS 2006–2010, ACS 2007–2011, …, ACS 2017–2021). I understand IPUMS recommends using census block group for ACS crosswalks, but I wa… --- ## [Race: White Alone vs. White Alone (not Hispanic or Latino)](https://forum.ipums.org/t/race-white-alone-vs-white-alone-not-hispanic-or-latino/5037)
**Author:** [@Lorena\_Guadiana](https://forum.ipums.org/u/Lorena_Guadiana)\ **Replies:** 3\ **Last updated:** [January 17, 2023, 7:53am UTC](https://forum.ipums.org/t/race-white-alone-vs-white-alone-not-hispanic-or-latino/5037 "2023-01-17T07:53:00Z")
I just downloaded NHGIS tables B19013A and B19013H corresponding to Median Household Income in the Past 12 Months (in 2021 Inflation-Adjusted Dollars) (White Alone Householder) and Median Household Income in the Past 12 … --- ## [Link to census tract estimates points to crosswalk files](https://forum.ipums.org/t/link-to-census-tract-estimates-points-to-crosswalk-files/4974)
**Author:** [@Matt\_Hom](https://forum.ipums.org/u/Matt_Hom)\ **Replies:** 4\ **Last updated:** [January 12, 2023, 3:10pm UTC](https://forum.ipums.org/t/link-to-census-tract-estimates-points-to-crosswalk-files/4974 "2023-01-12T15:10:50Z")
Hi! I’m interested in obtaining a copy of NHGIS’s annual census tract estimates for 2010-2019 as described here (Tract Estimates | IPUMS NHGIS). Unfortunately, when I click on the download link, I’m redirected to downloa… --- ## [Enumeration District Shapefiles](https://forum.ipums.org/t/enumeration-district-shapefiles/4982)
**Author:** [@Carlos\_Parada](https://forum.ipums.org/u/Carlos_Parada)\ **Replies:** 1\ **Last updated:** [November 17, 2022, 7:36pm UTC](https://forum.ipums.org/t/enumeration-district-shapefiles/4982 "2022-11-17T19:36:55Z")
It looks like Ancestry.com has maps of the 1950 enumeration districts, so it seems like there’s digitized versions of ED maps. Are there any plans to add enumeration district maps to NHGIS, either for 1950 or earlier cen… --- ## [Availability of Minor Civil Divisions in 1850 Decennial Census Microdata](https://forum.ipums.org/t/availability-of-minor-civil-divisions-in-1850-decennial-census-microdata/4956)
**Author:** [@Clark\_Bagnall](https://forum.ipums.org/u/Clark_Bagnall)\ **Replies:** 1\ **Last updated:** [November 11, 2022, 9:10pm UTC](https://forum.ipums.org/t/availability-of-minor-civil-divisions-in-1850-decennial-census-microdata/4956 "2022-11-11T21:10:16Z")
I understand that data at the level of minor civil division is not available in summary form for the 19th century. An earlier post to this forum suggested summarizing the microdata by minor division code to obtain the sa… --- ## [Block-level land area variable?](https://forum.ipums.org/t/block-level-land-area-variable/4832)
**Author:** [@acc357](https://forum.ipums.org/u/acc357)\ **Replies:** 5\ **Last updated:** [November 10, 2022, 3:52pm UTC](https://forum.ipums.org/t/block-level-land-area-variable/4832 "2022-11-10T15:52:54Z")
Trying to download data on LAND AREA at the block-level in 2010. (I ultimately want to calculate population density, but there isn’t a variable for that. Correct? I’m assuming I’ll need to use this land area variable and… --- ## [ZCTA Standardized Data from 1990 to 2020](https://forum.ipums.org/t/zcta-standardized-data-from-1990-to-2020/4958)
**Author:** [@Alexander\_Mikulas](https://forum.ipums.org/u/Alexander_Mikulas)\ **Replies:** 2\ **Last updated:** [November 8, 2022, 1:49am UTC](https://forum.ipums.org/t/zcta-standardized-data-from-1990-to-2020/4958 "2022-11-08T01:49:46Z")
Hello all, I am new user with Zip data. I am curious about how 1990 and 2000 ZCTA data are standardized to 2010 ZCTA geography, since some ZIPs did not exist in earlier years. I am using 1990, 2000, 2010, and 2020 decen… --- ## [FUNCSTAT variable in 2000 geographies?](https://forum.ipums.org/t/funcstat-variable-in-2000-geographies/4854)
**Author:** [@rmanduca1](https://forum.ipums.org/u/rmanduca1)\ **Replies:** 5\ **Last updated:** [November 4, 2022, 3:53am UTC](https://forum.ipums.org/t/funcstat-variable-in-2000-geographies/4854 "2022-11-04T03:53:55Z")
I’m attempting to create a complete list of active general purpose local governments in the year 2000. I have previously done a similar analysis using 2020 data from NHGIS, and was able to use the FUNCSTAT variable in th… --- ## [Land Area variable for 1990 Census Tracts](https://forum.ipums.org/t/land-area-variable-for-1990-census-tracts/3836)
**Author:** [@Dan\_Meltzer](https://forum.ipums.org/u/Dan_Meltzer)\ **Replies:** 5\ **Last updated:** [November 3, 2022, 10:05pm UTC](https://forum.ipums.org/t/land-area-variable-for-1990-census-tracts/3836 "2022-11-03T22:05:47Z")
Hello. I’m using NHGIS Census Tract (and Block Group) GIS files for 1990, 2000, and 2010. In the 2000 and 2010 files, there are ALAND and AWATER variables to distinguish water from land area within a given CT or BG. In t… --- ## [Count of same-sex couples in 1990](https://forum.ipums.org/t/count-of-same-sex-couples-in-1990/4925)
**Author:** [@JKim](https://forum.ipums.org/u/JKim)\ **Replies:** 5\ **Last updated:** [October 24, 2022, 3:58pm UTC](https://forum.ipums.org/t/count-of-same-sex-couples-in-1990/4925 "2022-10-24T15:58:03Z")
Hi, I was trying to get the count of same-sex couples in 1990 at the tract level using NHGIS, which at the best of my knowledge is available. I used the geographic unit filter Tracts, the year filter 1990 and the topic… --- ## [Historical decennial count for cities back to 1900 (ideally w/ black-white racial composition)](https://forum.ipums.org/t/historical-decennial-count-for-cities-back-to-1900-ideally-w-black-white-racial-composition/4899)
**Author:** [@Jaclyn\_Butler](https://forum.ipums.org/u/Jaclyn_Butler)\ **Replies:** 2\ **Last updated:** [October 13, 2022, 8:18pm UTC](https://forum.ipums.org/t/historical-decennial-count-for-cities-back-to-1900-ideally-w-black-white-racial-composition/4899 "2022-10-13T20:18:07Z")
Hello, I would like to analyze historical population counts for the city of Kalamazoo (Michigan), ideally back to 1900 and including counts of the white and black population. The Wikipedia page for Kalamazoo includes hi… --- ## [Different number of blocks in data table and GIS file?](https://forum.ipums.org/t/different-number-of-blocks-in-data-table-and-gis-file/4905)
**Author:** [@An\_Li](https://forum.ipums.org/u/An_Li)\ **Replies:** 1\ **Last updated:** [October 9, 2022, 10:43pm UTC](https://forum.ipums.org/t/different-number-of-blocks-in-data-table-and-gis-file/4905 "2022-10-09T22:43:21Z")
I am using the 1990 Block-level total population data of Alabama. In the block-level GIS file (1990, basis: 2000 TIGER/Line +), there are 173,147 features. However, the source table has 111,868 block-level observations… --- ## [Difference between poverty measure in ACS 2011 five-year estimates versus 2012 five-year estimates?](https://forum.ipums.org/t/difference-between-poverty-measure-in-acs-2011-five-year-estimates-versus-2012-five-year-estimates/4837)
**Author:** [@Jaclyn\_Butler](https://forum.ipums.org/u/Jaclyn_Butler)\ **Replies:** 2\ **Last updated:** [September 8, 2022, 12:43am UTC](https://forum.ipums.org/t/difference-between-poverty-measure-in-acs-2011-five-year-estimates-versus-2012-five-year-estimates/4837 "2022-09-08T00:43:27Z")
I am trying to conduct a time-series analysis on county-level poverty for 1990, 2000, and 2007-2011 and 2015-2019. However, even when I select the 2011 five-year estimates, I am directed toward 2012 five-year estimates i… [Previous page](https://forum.ipums.org/c/nhgis/26.md?page=2) [Next page](https://forum.ipums.org/c/nhgis/26.md?page=4)