Questions tagged [census]

A procedure of systematically acquiring and recording information about all the members of a given population.

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Constructing contiguous regions with similar properties by graph partitioning

I have census data for census output areas. Each area is a geographical region. I would like to partition these areas into contiguous super-regions with similar properties. For example, in each area ...
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Summing data within a specified radius

I have created a map to display 2011 census data using .shp files of output areas in England and Wales and joined this to a csv file which has the census data for each output area. I then display he ...
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How can I get latitude and longitude from FIPS codes?

I have full FIPS codes down to the block, looking for a way to convert the FIPS codes into centroid latitude/longitude for each block. Basically this but backwards (and I'd like blocks, not just ...
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Error importing TIGER census block gdb in GDAL

I have downloaded the 2015 Census Block GDB for the entire country from the census website here: https://www.census.gov/geo/maps-data/data/tiger-geodatabases.html. I am facing a problem in that when ...
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52 views

Aggregating census tracts and reducing Coefficients of Variation?

I am working on a project that maps out poverty rates (ACS data) by census tract. Many of the tracts have CV's that are just too high for our study and I am hoping for find a sound methodology in ...
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1k views

German Census Demographic Data @ zip-code level

The US Census has an API to pull Census/ACS data at the ZTCA (zip-code tabulation area) level. I'm looking for the same functionality with German data. So far I've identified several websites such as ...
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79 views

Building customized data set from American Community Survey data?

I am trying to create a database in SQL Server with a customized dataset containing census information from the American Community Survey content available online. I want to show a granularity in my ...
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50 views

Finding equivalent API-supported data to the 2000 Census

I'm having some difficulty choosing Census datasets for a project that involve various SES measures at the block-group level. I'll be looking at things like median household income and percentage of ...
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1answer
3k views

Seeking India population by village, town and city for 1981, 1991, 2001 and 2011?

Trying to source population data for every village, town and city in India. I have been able to extract data for 2001 & 2011 from the census site, but am having a tough time finding a reliable ...
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Overlap analysis not running

I'm trying to run QGIS's overlap analysis. I ran this a few days ago, but it's not working anymore. I have yellow as zipcodes (overlap_zipcodes) and purple as census tracts (84_censustracts). I'm ...
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23 views

Identifying area code for a particular US city

I'm trying to build a query like: "tell me what area codes (telephony area codes) overlap San Francisco" which should return 415 and 628. Doing some google searches indicates that the US census data ...
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330 views

Source for US urban-suburban-rural classifications by census tract

I would like to assign every U.S. census tract its own unique classification on the urban-rural spectrum. USDA's Rural-Urban Area Commuting Codes (RUCA) is a good start, but it's focus is rural - it ...
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78 views

Performing Weighted Buffer Analysis in QGIS?

I am running a 5 mile buffer analysis around a business location, with the objective to calculate the percent of high income earners ($200k+) within that buffer. Normally, I would intersect the ...
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25 views

Creating Locator using 2010 Census Block Group data

When I attempt to create an Address Locator in ArcMap using the shapefile (El Paso County, Texas) I download from the census website (t1_2010_48141_bg10.shp) I am not sure which alias names to match ...
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56 views

Confirming coordinate system/shapefile is correct?

I am using Census Shapefiles from NHGIS. I am trying to convert points from it to easy to read latitude and longitude - but am having some trouble. The sample data I'm using for now is data from ...
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21 views

Is it possible to get specific Asian population totals from the Census at the Block or Block Group level?

I know you can get it at the Tract level but I can't for the life of me find it at at a lower level. I can find totals for just "Asian" at these levels but I want it to be more specific than that (e.g....
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131 views

Obtaining population estimates by ZCTA from American Fact Finder

I would like to obtain the most recent population estimates (and age and gender information if possible) at the ZIP Code Tabulation Area (ZCTA) level. I think this data exists on the American Fact ...
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81 views

Changes in census tracts

I am doing an analysis using census tracts from São Paulo, Brazil, with Qgis. The problem is that changes in their boundaries occur between the periods. Most of them divide in two or three. The ...
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125 views

How does US Census map the input to shapes?

I've loaded a bunch of the census data. We're looking at using it for both geocoding of addresses, and also for census fact lookups (by tract or block or whatever). The issue that we've bumped into ...
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102 views

Get neighbor census tracts for a given census tract

I have IDs for census tracts (USA census tracts). I want to get neighbor tracts for a given census tract through an API call. There are APIs for get the census tract for a given location point (...
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1answer
255 views

Using ZCTA (Census ZipCode) polygones

I have downloaded some files from census website and did some cleaning to get ZCTA map for new york, but I noticed that there are overlapped regions (some regions are inside others). For some ...
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666 views

Combining Raster and Vector data

I've created a Watershed raster data set (using the Watershed Tool) for a certain area. Within that watershed raster, there are 8 basins that appear I'm trying add the total population to each of ...
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39 views

Statistical bias arising out of only comparing US census block groups that have not changed (been split) over time?

Census Block Group ("CBG") study areas are notorious for changing over time. Even from 2009 to 2013, about 10-25% of the CBG's in South Carolina have not remained consistent over that time. Seeing ...
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Looking for a source of data for these specific United States Demographics for People and Businesses

Sorry for if I come across ignorant. I usually hangout over at StackOverflow. I'm a developer and a client has specific demographics needs that I'm not sure where to get. I looked at some Census data ...
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89 views

QGIS join by location not returning for features

I have eight contours/features in one shapefile (contour.shp) that i want to find the number of population within each contour, this is in another shp. I am using join attributes by location to do ...
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107 views

Making Tiles - Varying the Zoom Level by Population Density

I want to create map tiles for all of the United States at high zoom level (12 or 13). I am using TileMill and mapping census tracts (income). However, I only need the high zoom level for populated ...
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2k views

How to calculate weighted mean coordinates within polygons?

I'm using QGIS 1.8 on OSX 10.8.3. I have a polygon shapefile of all of the US state legislative districts. I also have a layer of points that are centroids of US Census Tracts, with a field for the ...
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210 views

Identifying shapes in TIGERweb WMS SVG

I'm using the US Census WMS service describe here. Using code similar to that found in this example, but specifying a data format of "image/svg+xml", I've been able to get the TIGERweb WMS service to ...
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322 views

Street block and Census Block

Study Area: Manhattan I'm measuring the street density using Street Network Grain size measure = Number of Street blocks per square mile. I have the NY street network but I do not have the map of ...
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8 views

Where to get US census data for year 2019

I would like to know any sources where we can get US census data for year 2019. I did check the census site and the ACS one via its API gives data only till 2017.
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Why are there duplicate geometries in U.S. census shapefiles?

I have been writing a Python program to analyze the contents of shapefiles from the 2010 U.S. census, and I came across some odd duplication that I cannot explain. For example, in the 2010 shapefile ...
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10 views

ACS Living Atlas Layers in ArcMap

The US Census Bureau and Esri have put together a set of layers showing data from the American Community Survey. The data is available online, and looks incredibly useful, especially since they're no ...
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1answer
29 views

US Census Bureau Shapefiles with district IDs

I am loading senate district polygon shapefiles from https://www.census.gov/cgi-bin/geo/shapefiles/index.php?year=2019&layergroup=State+Legislative+Districts into my Leaflet map. Well, to be ...
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Java example of batch geocoding with the US census bureau's geocoding API

I am geocoding a batch of addresses with the US Census Bureau's free geocoding tool. I am following the guide at https://geocoding.geo.census.gov/geocoder/Geocoding_Services_API.pdf. I have a ...
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104 views

Downloading Census data to PostgreSQL PostGIS TIGER extension for Amazon RDS database

Can someone point me toward instructions on how to download census data for the postGIS_tigerP_geocoder extension? I would like to use the geocode() function, but any query returns 0 results. From ...
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18 views

Populating attributes of smaller polygons using bigger polygons

I have polygons TAZs (Travel Analysis Zones) that do not have any county information in them. I want to populate these TAZs with COUNTYFIPS that would have county codes in which these polygons are ...
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31 views

Obtaining geographic data for California?

Where can I download census tracts and infrastructure data of California for 1997?
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56 views

Dealing with non-nested geographic units using the RQGIS and tigris R packages

I recently came across this tutorial suggesting that the RQGIS and tigris R packages could be used to overcome issues with non-nested geographies: https://rpubs.com/corey_sparks/256942 I'm trying to ...
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1answer
248 views

Seeking crosswalk of census tract to town instead of CDP?

I'm trying to match towns from a dataset to Census tracts in the year 2000, with FIPS code as a place identifier. I'm aware of http://mcdc2.missouri.edu/websas/geocorr2k.html#GFOPTS, the GeoCorr ...
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75 views

Put together Shapefiles with data for individual years into Multiple Year Space-Time Cube

I have 16 shapefiles (listed above). Each shapefile contains county-level data on mortality rates for years 1999 to 2015, respectively. I organized the mortality rate data in Excel. I joined the ...
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72 views

How does the US Census Bureau simplify its Cartographic Boundary Shapefiles?

The US Census Cartographic Boundary Shapefiles are available in 1:500,000 and 1:5,000,000 and 1:20,000,000 resolutions. The boundaries are well-aligned and the data otherwise seemingly clean. How ...
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868 views

Drawing Census Tracts in Google Maps

If I have census data with TigerGIS/PostGIS is it possible to get back all of the long/lat coordinates for the certain census tract? I want someone to be able to type in an address or census tract, ...
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258 views

Finding census block with highest pop. value within census tract using QGIS?

In QGIS, I'm trying to plot a centroid of only the census block with the highest population within each census tract. So there should only be one point per tract- that of the block with the greatest ...
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How to convert Coordinates (Lat/Long) to GeoIDs?

I am trying to build an index to look up FIPS codes for census blocks, given a pair of coordinates (latitude, longitude). I know the Census API has this functionality. However, I need to build an ...
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1answer
21 views

2010 Block Group Income

Does anyone know why there isn't 2010 income data at the block group level on American Fact Finder? I don't see it at the census tract either. Looking for documentation explaining why it's not there ...
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1answer
57 views

Seeking population data for Detroit?

I need population and age breakdown data for Detroit. I have found census tract shapefiles but none with the attribute data that I need. Any idea where I might find such data?