Texas's 18th congressional district (TX-18)
Texas's 18th congressional district (TX-18) covers parts or all of Fort Bend County and Harris County, and 46 ZIP codes (20 wholly inside it). Its 2020 population was 766,987. This is the map in force for the November 3, 2026 election.
Who represents TX-18
| Office | Member | Contact |
|---|---|---|
| U.S. Representative (TX-18) | Christian D. Menefee (D) | 202-225-3816 |
| U.S. Senator | John Cornyn (R) | 202-224-2934 · contact form |
| U.S. Senator | Ted Cruz (R) | 202-224-5922 · contact form |
Elected in 2024 under TX's previous congressional map; this district's lines changed for the 120th Congress (seated January 3, 2027).
Officials serving now (members of Congress until January 3, 2027). Sources: Members of Congress: the @unitedstates project, congress-legislators (CC0).
Counties
| County | Share of the county's residents in TX-18 |
|---|---|
| Fort Bend County | 18% |
| Harris County | 13% |
ZIP codes
Percentages mark ZIPs only partly in TX-18: the share of that ZIP's residents inside it.
- 77002 (94%)
- 77003
- 77004
- 77006 (18%)
- 77007 (0.2%)
- 77009 (8.9%)
- 77010
- 77011 (30%)
- 77016
- 77019 (24%)
- 77020 (45%)
- 77021
- 77023 (35%)
- 77025 (56%)
- 77026
- 77028
- 77029 (35%)
- 77030 (42%)
- 77031
- 77033
- 77035
- 77036 (7.4%)
- 77044 (52%)
- 77045
- 77047
- 77048 (86%)
- 77050
- 77051
- 77053
- 77054
- 77071 (95%)
- 77074 (7.0%)
- 77078
- 77085
- 77087 (25%)
- 77096 (66%)
- 77099 (25%)
- 77204
- 77396 (24%)
- 77459 (43%)
- 77477 (80%)
- 77478 (0.4%)
- 77489
- 77545 (95%)
- 77583 (1.6%)
- 77584 (6.4%)
Towns
Stafford-Missouri City CCD, Houston CCD and Sugar Land CCD.
Get this in your AI agent
Your agent can draw every precinct in TX-18, or list them with population shares (related_geographies). Add https://boundarymcp.com/mcp to Claude, ChatGPT, Cursor or Codex (free, no key; how), then:
get_boundaries(id="us:congressional_district:4818", children_level="precinct", include_districts=True)