---
id: "us_census_tract"
kind: "datatype"
status: "draft"
is_pii: false
categories: ["geo", "government"]
country: ["US"]
langs: ["en"]
quality: 80
url: "https://registry.apicrafter.io/datatype/us_census_tract"
---

# US census tract (`us_census_tract`)

> **Draft.** Draft records have not been reviewed yet and may be incomplete or wrong; do not treat them as authoritative for legal or compliance decisions.

Census tract, a small and fairly permanent statistical subdivision of a US county, usually with 1,200 to 8,000 people. The tract number has a basic number of up to four digits and an optional two-digit suffix, for example 1457.02. Files store it as a 6-digit code with leading zeros and an implied decimal point (TRACTCE, 145702), unique within a county, or as an 11-digit GEOID with the state and county codes in front. Some ranges are reserved for water and special land use areas.

- Personal data (PII): no
- Categories: Geographic identifiers (geo), Government related (government)
- Countries: United States (US)
- Languages: English (en)
- Classification: categorical

## Detection

Regular expression (Python `re`):

```
^(?:\d{6}|\d{11}|\d{1,4}(?:\.\d{2})?)$
```

## Examples

- `223100` — 6-digit code of Census Tract 2231
- `2231` — tract number as displayed
- `1457.02` — tract number with a suffix
- `48201223100` — Census Tract 2231, Harris County, TX, as a GEOID
- `14570` (invalid example) — five digits

## Translations

- ru: Переписной участок США (census tract)

## Sources

- wikipedia: <https://en.wikipedia.org/wiki/Census_tract>
- wikidata: <https://www.wikidata.org/wiki/Q107738887>
- doc: <https://www2.census.gov/geo/pdfs/maps-data/data/tiger/tgrshp2023/TGRSHP2023_TechDoc.pdf>

## Quality

Score 80/100. Missing: mapping (Wikidata, Schema.org, ...), detector coverage.

JSON: <https://registry.apicrafter.io/api/v1/datatypes/us_census_tract.json> · Edit: <https://github.com/apicrafter/metacrafter-registry/edit/main/data/datatypes/US/geo/us_census_tract.yaml>