Taxing units

The entities that levy tax: counties, cities, ISDs, colleges, hospital districts, MUDs, ESDs and more.

GET /v1/taxing-units

GET/v1/taxing-units

Search units by name or code, optionally filtered by county or collector.

Parameter	In	Type	Description
q	query	string	Search by name or unit code.
county	query	string	Filter by county FIPS (includes out-of-county units that tax that county).
collector_id	query	string	Filter by collector UUID — the units this collector serves.
limit	query	integer	Page size, 1–200. Default 50.
offset	query	integer	Page offset. Default 0.

Response (abridged)

{
  "data": [
    {
      "unit_code": "482-011-01",
      "name": "HOUSTON ISD",
      "unit_type": "school_district",
      "home_county_fips": "48201"
    }
  ],
  "meta": { "total": 582, "limit": 50, "offset": 0 }
}

GET /v1/taxing-units/{unit_code}

GET/v1/taxing-units/{unit_code}

Unit detail: the counties it taxes, its collector(s) — a unit may have several when it spans county lines — and provenance.

Response (abridged)

{
  "data": {
    "unit_code": "482-011-01",
    "name": "HOUSTON ISD",
    "unit_type": "school_district",
    "home_county_fips": "48201",
    "counties": [ { "fips": "48201", "name": "Harris", "slug": "harris" } ],
    "collectors": [
      { "id": "…", "name": "…", "collector_type": "county", "email": "…", "phone": "…" }
    ],
    "provenance": { "source_id": "…", "as_of": "2026-07-25", "confidence": "published" }
  }
}

GET /v1/taxing-units/{unit_code}/rates

GET/v1/taxing-units/{unit_code}/rates

Adopted rate history for a unit, newest year first.

Parameter	In	Type	Description
years	query	integer	Limit to the most recent N years (1–10).

Response (abridged)

{
  "data": {
    "unit_code": "482-011-01",
    "unit_name": "HOUSTON ISD",
    "rates": [
      {
        "tax_year": 2025,
        "total_rate": 1.0967,
        "never_reported": false,
        "no_new_revenue_rate": 1.0512,
        "voter_approval_rate": 1.1801,
        "mo_rate": 0.9123,
        "debt_rate": 0.1844,
        "provenance": { "…": "…" }
      }
    ]
  }
}

Rates are per $100 of taxable value. never_reported is true when the unit filed no rate report that year (distinct from a zero rate).

Unit codes

unit_code is the 8-digit state code CCC-UUU-TT: county (odd FIPS), unit id, and type suffix. unit_type is derived from the suffix. Some units have no resolvable state code (PIDs, some TIRZ/management districts) — those appear on parcels with unit_code: null and their CAD-local tax_district code only.