Census 2020 Blocks
Census geographic areas are used by the Census Bureau to collect, tabulate, and aggregate decennial census data, and are also used in more frequent demographics reports like the annual American Community Survey (ACS). Three levels of areal geography are available from MassGIS (with layer name in parentheses): Blocks, Block Groups, and Tracts
- Records
- 5,294
- Formats
- 5
- Last updated
- Jun 13, 2025
Download & API
Census 2020 Blocks (CSV)csv
Spreadsheet — attributes, with coordinates for point layers
Census 2020 Blocks (GeoJSON)geojson
GeoJSON — for web maps and GIS tools
Census 2020 Blocks (GeoParquet)geoparquet
Columnar — query with DuckDB / SQL
Census 2020 Blocks (map tiles)pmtiles
Vector tiles — embed in a map
Live ArcGIS layer (source)arcgis
Rendered from PMTiles, queried in-browser from GeoParquet — no server. How this works
Schema
| Field | Type | Values |
|---|---|---|
State FIPS Code STATEFP20 | string | 1 values: 25 (5,294) |
County FIPS Code COUNTYFP20 | string | 3 values: 017 (2,947), 021 (1,282), 025 (1,065) |
Tract Code TRACTCE20 | string | |
Block Number BLOCKCE20 | string | |
GEO ID GEOID20 | string | |
Block Name NAME20 | string | |
MAF/TIGER Feature Class Code MTFCC20 | string | 1 values: G5040 (5,294) |
Land Area in Sq. Meters ALAND20 | number | 0 to 2,633,492 |
Water Area in Sq. Meters AWATER20 | number | 0 to 655,856 |
Latitude of Internal Pt. INTPTLAT20 | string | |
Longitude of Internal Pt. INTPTLON20 | string | |
Housing Units HOUSING20 | number | 0 to 801 |
2020 Population POP20 | number | 0 to 2,224 |
Area in Sq. Feet AREA_SQFT | number | 5,105 to 28,382,778 |
Area in Acres AREA_ACRES | number | 0 to 652 |
City or Town TOWN | string | 12 values: NEWTON (1,419), BOSTON (1,065), WALTHAM (551)… |
MassGIS Town ID TOWN_ID | integer | 26 to 333 |
Block Group GEO ID BLKGRP20 | string | |
Tract GEO ID TRACT20 | string | |
City/Town FIPS Code COUSUBFP | string | 12 values: 45560 (1,419), 07000 (1,065), 72600 (551)… |