BOUNDARIES.md

Sources of Boundary Information

Often people who want to use a tool like acs-aggregate have a bootstrapping problem: where are the GIS files for the areas for which they want to aggregate data?

While this will probably be hard to keep up to date, and perhaps should be in some form other than markdown in this repository, let's take a stab at building a list.

Since we started this, Census Reporter launched a tool which uses this kind of data, and which may list some options which are not included here.

Since this is about aggregating Census data, let's stipulate that it should only include polygon data, not points and lines. And, only boundaries relevant to the United States and its territories. We'll organize it by state (or state-like.)

US - United States

• Home Owners' Loan Corporation (HOLC) "Redlining" maps (also available for many specific cities)
• US District Court Jurisdictions (see also COUNTY_DISTRICT_README.md)

AL - Alabama

• Birmingham Neighborhoods
• Huntsville City Council Districts

CA - California

• Los Angeles County, CA Neighborhoods
• Oakland Community Police Beats
• Oakland Council Districts
• Sacramento, CA City Council Districts
• San Francisco, CA Supervisor Districts (2012 Redistricting)

CO - Colorado

• Various state-level files including hospital, library, water, fire protection districts and more
• Denver "Statistical Neighborhoods"

DC - Washington, DC

• Washington, DC Neighborhood Clusters

FL - Florida

• Orlando, FL Neighborhoods

GA - Georgia

• Atlanta Neighborhoods
• Atlanta Neighborhood Planning Units (NPUs)

HI - Hawaii

• Honolulu "Realtor Neighborhoods"

IL - Illinois

• Chicago Neighborhoods
• Chicago Community Areas
• Chicago Police Districts
• Chicago City Council Wards

IN - Indiana

• Bloomington City Neighborhood Associations

MA - Massachusetts

• Boston Neighborhoods
• Cambridge CDD (Community Development Department) Neighborhoods

MD - Maryland

• Baltimore Neighborhoods

MI - Michigan

• Detroit neighborhood boundaries

MN - Minnesota

• Minneapolis, MN Neighborhoods

MO - Missouri

• Kansas City neighborhood boundaries
• St. Louis city shapefile data (includes ward and neighborhood boundaries as well as other divisions)

NY - New York

• New York City Community Districts
• New York City Council Districts
• New York City Election Districts
• New York City Neighborhood Tabulation Areas (NTAs) (note that an NTA-census tract crosswalk is available)
• New York City School Districts (to the Census, NYC is one big district)
• Syracuse, NY Common Council Districts

OH - Ohio

• Cleveland City Neighborhoods (Statistical Planning Areas)

OK - Oklahoma

• Oklahoma City Neighborhood Associations
• Oklahoma City City Council Wards

OR - Oregon

• Portland Neighborhood Association Boundaries

PA - Pennsylvania

• Philadelphia Neighborhoods
• Pittsburgh Neighborhoods

RI - Rhode Island

• Providence Neighborhoods
• Providence Wards

TX - Texas

• Houston "Super Neighborhoods"

VA - Virginia

• Richmond, VA neighborhoods

WA - Washington

• Seattle Community Reporting Areas
• Seattle "City Clerk" Neighborhoods
• Seattle Council Districts
• Spokane, WA Neighborhoods

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If you aren't finding what you're looking for above, here are some other resources which haven't been fully explored yet:

• While it may or may not be current, the GitHub repo for Click That Hood is worth a look if you don't find what you're looking for here -- and it goes far beyond the US as well.
• The Big Ten Academic Alliance has a Geoportal with links to geodata for a number of US municipalities
• For a while, Zillow offered neighborhood maps that they pulled together for their service. They no longer provide it, but I came across this site which seems to have archived them. They're organized by state, but for many states, there are only neighborhoods for a single city.
• Koordinates.com is a geospatial data management platform which has aggregated GIS data from diverse sources. At the time of this writing, a search for 'neighborhood' gets well over 500 hits.