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

# US Census Bureau GEOID (`us_census_geoid`)

> **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.

Numeric identifier of a geographic area in US Census Bureau data. It joins the codes of the areas it nests in, so its length shows the level - 2 digits for a state, 5 for a county, 7 for a place, 10 for a county subdivision, 11 for a census tract, 12 for a block group and 15 for a block. Some blocks have a one-letter suffix. ZCTA and CBSA codes are also 5 digits. A fully qualified form with a summary level prefix is a separate pattern (us_census_geoid_fq).

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

## Detection

Regular expression (Python `re`):

```
^(?:\d{2}|\d{5}|\d{7}|\d{10}|\d{11}|\d{12}|\d{15}[A-Z]?)$
```

## Examples

- `48` — Texas (state)
- `48201` — Harris County, TX (county)
- `4835000` — place in Texas
- `48201223100` — Census Tract 2231, Harris County, TX
- `482012231001` — Block Group 1, Census Tract 2231, Harris County, TX
- `482012231001050` — block in Census Tract 2231, Harris County, TX
- `482012` (invalid example) — six digits is not a GEOID length

## Translations

- ru: GEOID Бюро переписи США

## Sources

- doc: <https://www.census.gov/programs-surveys/geography/guidance/geo-identifiers.html>
- doc: <https://www.census.gov/programs-surveys/geography/about/glossary.html>

## Quality

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

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