A procedure of systematically acquiring and recording information about all the members of a given population.
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52 views
Congressional Redistricting
I have a project coming up where I need to create new congressional district looking at only total population data. I am planning on using the census tract level of data, but I am having some ...
4
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2answers
61 views
Downloading multiple files from TIGER FTP site
Hello everyone! I've been downloading TIGER data per county from the FTP site one at a time, with some states having hundreds of files. I was curious if there was a faster way to download maybe all ...
2
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1answer
32 views
US Census Data - An orderly means of deducting the area-weighted population of segments of incorporated places from the population of counties?
I'm working in ArcMap 10.1. Currently examining the segment of states with a geographical hierarchy of
Counties, coextensive with state boundaries
Within counties, unincorporated areas and ...
1
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1answer
24 views
Write unique ID(s) of polygons in layer A intersecting polygons in layer B to a field in layer B, in ArcMap?
I'm working in ArcGIS 10.1. Suppose that I have two polygon layers, A and B.
Polygons in layer B can have one of a few relationships to those in layer A:
They may be completely contained by ...
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1answer
40 views
ArcMap Geoprocessing Operation to create a layer with incorporated places and, separately, surrounding unincorporated portion of a county?
I am working with TIGER FILES, attempting to use the update (analysis) operation in ArcMap 10.1. The files I'm using are counties, and the incorporated (non-CDP) segment of the places file.
I'm ...
0
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1answer
18 views
BBox missing when converting TIGER to GeoJSON
I can't get the bounding boxes of polygons if TIGER/Line shape files when converting them to GeoJSON using FWTools. The other default information is present and there is no difference between the ...
0
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1answer
28 views
merging and seperating data
I have a census block shapefile and I want to separate the data according to their towns or village. The towns/village is a separate shapefile. Any help is greatly appreciated. I am using ArcInfo ...
1
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0answers
68 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 ...
3
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2answers
60 views
Which census geography boundaries do congressional districts preserve?
Tried searching for this information elsewhere and couldn't find a clear answer in the TIGER documentation, so I thought I'd turn to you good folks.
Obviously, congressional districts can cut across ...
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0answers
36 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 ...
4
votes
2answers
116 views
Simplest way to make web maps with lots of shapes
I have some computed data about US Census blocks. I'd like to make a web map to display that data. I've searched around and found various tools, but I can't tell what is the simplest "lazy man's ...
2
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0answers
64 views
oil palm stand census algorithm
Anyone have experience in oil palm stand census using tree detection algorithm from satellite images in ArcGIS or QGIS? any references for usable algorithm? What is the accuracy? thanks for help.
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0answers
40 views
Anyone have a sample MS SQL query for Census Block to State Legislative District matching?
I'm new to spatial queries. Does anyone have a sample MSSQL 2008 query that would match a Street/City/Zip with the CA State Senate and Assembly Districts? All I need to do is return the Legislator's ...
1
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1answer
47 views
Is pre-1990 historical block-level census data available online?
I'm looking for historical block-level data for Chicago.
According to this Census bureau document, historical block-level census data exists for major cities going back to 1960, and even back to ...
5
votes
1answer
105 views
How to analyze census data and display on map (shape file) in ArcGIS
first time on this part of Stack Exchange world.
I'm hoping you guys can give me an idea on how to start.
I basically have all this shape files representing a country, states of that country or ...
0
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1answer
85 views
How Trusted is ZipInfo.com's data?
I'm not in GIS, and I'm working on a nutty redball express project that involves matching some zip+4 data to congressional districts for the upcoming 113th congress. We have found very few sources of ...
4
votes
2answers
148 views
What's the difference between US Census DMA and MMA?
DMA and MMA are commonly used to denote a large, metropolitan municipal entity.
Is there a difference between the two? Is there a certified definition to these terms? Google is a bit inconclusive ...
5
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2answers
157 views
PostGIS - area-weighted calculation on an intersection
I'm trying to learn postgis sql by performing some familiar operations from ArcGIS. Here, I want to perform an area-weighted calculation of certain populations on the intersection of a set of parcels ...
3
votes
1answer
229 views
Specification for US Census GEOID?
I'm writing a program that needs to generate GEOID values from 2000 and 2010 Census data, to link the census data to TIGER/Line records. I'm starting with the state, county, region block, etc, values ...
2
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0answers
94 views
Where can I download free or open access census datasets for China, including their respective spatial boundaries?
I am interested in the equivalent of US Census Bureau open data and its relevant Tigerline spatial data, albeit for China. In Canada, we also have data released by Statistics Canada along with ...
1
vote
1answer
53 views
1990 US Census Block Boundary File?
Does anyone here know of a source from which 1990 Census Block polygons can be downloaded? For Illinois, specifically, if not for the entire country? The Census Bureau has "no plans to create Block ...
0
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0answers
20 views
How to map percent change between 2000 and 2010 Census Tracts? [duplicate]
Possible Duplicate:
How to compare 2000 Census block group data with 2010 block group data?
I am trying figure out how to do a percent change from 2000 to 2010 using Census data in ArcGIS ...
10
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3answers
317 views
How can I handle tables with 256+ variables?
I'm working with census data and downloaded several CSV files, each with with 600ish columns/variables. I'd like to store them all in a query-able database, but everything I've tried so far (MS ...
2
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1answer
63 views
Is it possible for me to perform a map of New Mexico where deaf person lives in a county from the US Census database?
I would like to get some feedback from those who have been doing or perform on US Census. Map. My question here is there a way for me to get information on Deaf person living in New Mexico. Would US ...
4
votes
1answer
259 views
Joining Census Data
I have collected census data for a county in Pennsylvania. Data varies from 1999-2010. For my data before 2010, a significant number of blocks do not match up (image below) when I join the data ...
5
votes
2answers
547 views
What is the SRID of census.gov shapfiles?
I downloaded the county files from:
http://www.census.gov/cgi-bin/geo/shapefiles2011/main
I cannot figure out what SRID to use with them. When I am trying to generate a class file from ./manage.py ...
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0answers
26 views
How to get 2010 Census Block Housing Unit Data for the entire US for 15-digit FIPS blocks [duplicate]
Possible Duplicate:
Where can I find the finest granularity of 2010 US census population information?
I'm working on a little data munging project and I need to find 2010 US Census data for ...
1
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3answers
382 views
Where can I find the finest granularity of 2010 US census population information?
I am writing a re-districting application where I want to be able to create US voting districts based on geographic coordinate population data. In a perfect world, I would have the population for each ...
3
votes
1answer
881 views
How to compare 2000 Census block group data with 2010 block group data?
I want to calculate the percent change for median household income in Los Angeles at the block group level from 2000 to 2010. Someone told me I have to reaggregate 2000 block data to 2010 block group ...
1
vote
4answers
141 views
Looking for Cities population datasets for the state of Arizona
Looking for cities in Arizona especially I'd like to have them with that has population attributes. I've checked Arizona's geospatial websites and none of them I have found.
Does anyone know where I ...
0
votes
2answers
79 views
Census school district ratio problem [closed]
I was recently asked to determine a valid indicator of school performance in Bryan/College Station, Texas. I received two data sets that are from The Texas Education Agency (TEA) and the Census ...
1
vote
2answers
93 views
How to get city data only and not county?
Most of the data I've come across only comes in state/county/block group/block format. However, I'd like to pare down the shapefile to only observe the block groups within a city, not the county of ...
1
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0answers
37 views
Level of data available on FactFinder
I am trying to find data at the block level or even block group level for the SF1 files and ACS 2010 or 2009. Just recently, two months ago, I was able to get this data but for some reason I am now ...
1
vote
1answer
530 views
How to get 2010 Census Block Data on Race and Age?
I'm interested in observing racial segregation in public & charter elementary schools in San Diego city (not county).
I believe the best way to analyze this would be at the block level and have ...
2
votes
3answers
1k views
Income data on a block level: how does a newbie do it?
I am a complete newbie at GIS data, and am trying to do the following:
Figure out census blocks in Miami-Dade (and several other counties) that have average household incomes > $75,000
Get the ...
3
votes
2answers
191 views
merging block group data that uses 2000 geography with 2010 geography
I would like to combine data sets from 2010 which use 2000 geography with 2011 data that use 2010 census geography. The data is from the contiguous US and is either at block or block group level. I am ...
1
vote
1answer
107 views
Demographic Info within 3 miles of longitude and latitude
I want to get demographic information within three or five miles of a location given its longitude and latitude. The demographic info I am looking for include number of people, age distribution, ...
3
votes
4answers
2k views
Free api to reverse geocode latitude, longitude to census tract?
I have a bunch of latitude,longitude coordinates (mostly city/town centroids) in the United States for which I'd like to find the containing census tract.
For instance,
input => nn.nnn, -nn.nnn ...
4
votes
2answers
299 views
What is the highest resolution of population density data that I can obtain for USA freely?
Ok so as far as my understanding goes the most high resolution dataset available that factors in many other things (other than Census data ) at a 1X1 km resolution is Landscan data created by Oak ...
2
votes
2answers
439 views
Gathering data for a large number of census block groups
I would like to collect some census data for every block group in New England. I'm primarily interested in median income and median age, and ideally I'd like a large .csv file with one row per census ...
2
votes
1answer
1k views
What does the code RTTYP represent in the USA Tiger road files?
I'm trying to figure out what a particular code represents in the US Census Tiger Line files for roads. I downloaded roads for the US from here. I've searched the documentation (link to large pdf) and ...
10
votes
2answers
1k views
Bulk lookup of address census tract and block
Is there a free or cheap way to code a large number of addresses and return or append the census tract and block data?
There are a number of ways to geocode an address and get the lat long, but I ...
5
votes
3answers
472 views
How to convert factfinder2.census.gov map data to KML?
I've downloaded a map from http://factfinder2.census.gov/faces/tableservices/jsf/pages/productview.xhtml?pid=DEC_10_SF1_P1 (limited to San Francisco census tracts), and I'd like to convert it to KML ...
5
votes
2answers
583 views
US Tiger or Open Street Map Route Data: One Way Street & Intersection Data
We're building a U.S. street routing application (finding paths for cars between two or more locations using public roads) and would like to use open source data US Tiger Data or Open Street Map or ...
5
votes
2answers
734 views
Using the US census to analyze data nationally
I'm trying to make a table to relate the STFID and LOGRECNO values for the US 2000 census at the block group level, nationally. I realize that the LOGRECNO value is a state specific unique variable, ...
6
votes
1answer
544 views
Help using the US American Community Survey Data
I want to use the USA American Community Survey Data for spatial analysis, but I'm having difficulty understanding how the survey tables are constructed so that I can relate them to block-group ...
1
vote
3answers
580 views
How to match Census Block Groups from different decades to show percent change?
I know for Census Tracts and Blocks there are Relationship files, but what is the best way to match Census Block Groups from different decades to compare change?
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0answers
75 views
Polticial Geography applied to GIS [closed]
I'd like to get some information on ownership for public, private and in general that applied to GIS. Is there a good website that I can read about it?
The reason I am asking is because there's data ...
5
votes
2answers
1k views
2010 Census Tiger County shp file with defined coastal land area
I am looking for a 2010 Census Tiger Shape file that hugs the coastline and doesn't include the ocean in county boundaries. I have a pre 2010 file that did this and I can't seem to find a 2010 ...
13
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4answers
4k views
Where to get 2010 Census Block data?
This might be a stupid question but I would like to download 2010 Census Block Data for several towns and I can't seem to find it on American Factfinder. Is it there? And if not, does anyone know ...
