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

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6
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3answers
480 views

How can I obtain the same area values provided by the Census for TIGER boundaries using PostGIS functions?

In PostGIS, how can I compute the area of Census Boundaries and obtain the same results as are provided by the Census? For example, most Census Boundaries include attributes for Land Area and Water ...
0
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2answers
576 views

Does anyone know what a geoid10 and its numbers mean?

I am doing home for my GIS class where we had to download census data from our county and to define what geoid10 and its numbers mean. I cannot find the definition anywhere.
3
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2answers
95 views

All US 2010 Census Data - Tract Level

I'm trying to find where I can download all the data (summarized to the tract level). By all data, I mean population race Marital status job wage age sex same sex couples kids education I need ...
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1answer
506 views

Python problems with select by attributes and user input

I am attempting to create a tool where the user can input a census tract number within the city of Plano (there are 77 tracts) and it ultimately creates a map layout showing the population density. I ...
4
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2answers
76 views

How I relate Census Blocks to FIPS Division/Subdivisions

I need to be able to relate a Census Block to it's corresponding FIPS Division and Subdivision and I have not found any data file or reference to help me identify that relationship, can you help?
0
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1answer
162 views

Automating calculation of Population Density in Census Tracts?

I am quite new to Python and I am attempting to practice by making a simple program with ArcGIS. I wanted to make a script that automated the calculation of population density of selected census ...
1
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0answers
596 views

Importing Census TIGER Shape Files to SQL Server 2012?

I've been doing my research on how to import shape files into Microsoft SQL Server 2012. and am still unable to figure out how to do it after hours of playing around with it. I'll document what I've ...
1
vote
1answer
312 views

Simple Spatial Join of Point Feature to Polygon Target Feature Not So Simple (Source Files Included)

I have what should be a simple task to perform: join ~47K census blocks from the PL redistricting files with pop and racial data joined to Chicago Public Schools High School boundaries to get an ...
1
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3answers
201 views

Research study participant mapping and analysis - comparison of software

I am new to everything GIS. I have been researching different software but have found more questions than solutions. What I want to accomplish: I'm working on a research project with participants ...
0
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1answer
355 views

How do I from convert from street level address to block/block group/census track?

I just downloaded block-level census data, using this answer Where to get 2010 Census Block data? It output a spreadsheet with a bunch of rows of the format GEO.id | GEO.id2 | ...
2
votes
1answer
353 views

US Census API - data by census tract

Using the US Census Tract API I can search for the age population in different parts of the country http://api.census.gov/data/2010/sf1?key=[key]&get=PCT0120125&for=county:* returns list of ...
1
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1answer
70 views

How to specify relationships (foreign keys) in a spatially enabled database for census geography?

Lets use the Canadian census geography design as an example: In my experience, a spatially enabled database for census geography can be created in two ways: Each geography contains a foreign key ...
4
votes
3answers
94 views

What meter resolution are US Census Block Shapes?

I'm creating a map layer that supports up to zoom level 14 and I want to know what resolution US Census blocks are? At zoom level 14 each pixel is approximately 16 meters. I am wondering if I can ...
3
votes
3answers
1k views

Best way to assign points to nearest roads in postgis?

I'm trying to implement a simplified type of dasymetric mapping for census data. I've downloaded the Census's American Community Survey individual-level data and randomly assigned every household to a ...
1
vote
0answers
892 views

India population by town: 1981, 1991, 2001, 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 ...
0
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0answers
205 views

How to map out commuting patterns by county?

I am looking to create a map that shows the commuting patterns in between counties. I am using data from Table 1 at this link. Obviously it will be formatted in a different way. Any ideas? Also, ...
2
votes
2answers
163 views

Choosing intervals for a map of race in the United States

I'm creating an open map layer of race in the United States using Census Data. This layer will be publicly available in the near future as "Justice Map". The goal is to help others create maps using ...
3
votes
1answer
308 views

How does a newbie get household income data based on address to the block level?

I am beginning a research project and need to find a way to access the census data about household income. We need it at a closer level than by zip code since income varies a lot by zip code in our ...
0
votes
1answer
95 views

Census Shapefiles Fit to Land

I'm looking for an oceans or coastlines shapefile that's a more detailed than what Natural Earth has to offer (1:10m). I'm working with 2000 Census county shapefiles, but it doesn't cut out lakes or ...
3
votes
1answer
108 views

Best place to download or purchase shapefiles for Louisiana Parish?

I am looking for shapefiles to either download or purchase for the BEAUREGARD Parish in Louisiana. I have been able to find files for the Townships and Sections but I am in desperate need of a ...
2
votes
2answers
178 views

Are US Census tracts GEOID the same across different years?

I want to know if it is appropriate to join tables from different years to the same census tracts TIGER file. Do all census tracts' ID stay the same? How would they change--adding new tracts, ...
1
vote
1answer
117 views

Find all census tracts N miles from a lat, lon point

Using R, I'd like to find all census tracts within a given distance of a point (lon,lat). i.e. All census tracts within 20 miles of 34.0522, 118.2428 I have used the sp library and over command to ...
2
votes
2answers
290 views

Japan Data: Postcode/Census

Hi I'm primarily looking for a GIS data source for postal codes in Japan as well as census data for different scales of geography. Has anyone found a good source of these data sets that is in ...
1
vote
1answer
342 views

Why do all rows go missing from File Geodatabase Feature Class to *.dbf conversion?

I tried to export a File Geodatabase Feature Class to a *.dbf table/shapefile, but there are no records inside. I believe there is no mistake in exporting--it is simple. The doubt is the file ...
2
votes
2answers
376 views

Ecuador Census Data

I am looking for Ecuador census data (digital GIS if possible) at the sub-parroquia (parish) level. The geographies and the tabular data would be great but at this point I am mostly in need of the ...
1
vote
1answer
66 views

Source for all census tables available at each census geography/summary level

I'm familiar with using factfinder2 and generally know my way around census products. But one thing that I've never found is a document that has all the tables from major census products like the ...
1
vote
1answer
173 views

Faster way than Spatial Join to join field from attribute table to address table?

I have a table of addresses for every state in the nation. I just recently finished doing spatial joins and adding in census block/tract data per state. I have a national shapefile of ...
1
vote
3answers
56 views

Europe sub-national urban rates

Urban rate (the % of population living in urban areas) is a rather common demographic indicator, at nation-level resolution. I'm trying to locate sub-national urban rate data (NUTS level 2 to be ...
4
votes
1answer
281 views

Splitting a shapefile into many shapefiles with open source

I want to create a shapefile for each of the 72,000 census tracts in the United States that includes the census blocks in that tract using open source software. I will probably start with a state ...
4
votes
1answer
3k views

Joining polygons in R

I am wondering how to join spatial polygons using R code? I'm working with census data where certain areas change over time and I wish to join the polygons and the corresponding data and simply ...
1
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0answers
55 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 ...
0
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0answers
284 views

Census Demographic Data from DMA ID

How can I go about finding demographic data by DMA ID? Is there a data file I can download from somewhere that I can use to import into my web application?
2
votes
1answer
105 views

Missing Polygons when importing a previously exported shapefile using QGIS (mmqgis plugin) Geometry Export to CSV.

I've obtained the following file from the US Census Bureau. ftp://ftp2.census.gov/geo/tiger/TIGER2012/UNSD/tl_2012_42_unsd.zip I've been working with these files and have noticed some issues with ...
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0answers
72 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
votes
3answers
552 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
votes
1answer
106 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
vote
1answer
64 views

How to write unique ID(s) of polygons in layer A intersecting polygons in layer B to field in layer B?

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 ...
1
vote
1answer
91 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 ...
1
vote
1answer
90 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 ...
1
vote
2answers
81 views

How to partition a Census block shapefile according to towns in a separate shapefile?

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
564 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
votes
2answers
111 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 ...
0
votes
0answers
111 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 ...
5
votes
2answers
218 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
158 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.
2
votes
1answer
93 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
215 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
votes
1answer
130 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
1k 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 ...
6
votes
2answers
894 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 ...