Flood map coverage in Texas

FEMA's National Flood Hazard Layer holds 5,445 FIRM panels for Texas from 139 digital flood map databases, reaching 138 of its 254 counties. Computed September 29, 2026.

What to expect from lookups here

• 116 counties have no digital FIRM in the NFHL (listed below). Points there come back "mapped": false.
• 3 of the maps are community-numbered, so parts of the counties they sit in may have no digital map.
• The map that has gone longest without a new panel is Town of Leona (480907), last revised 2002-12-20.

A real lookup in Texas

The point is the Census internal point of Sabine County, the county with Texas's most recently effective FIRM panel. FEMA's map puts it in zone X (area of minimal flood hazard). Recorded September 29, 2026.

curl -sG https://api.floodzoneapi.com/api/v1/flood/zone \
  -H "Authorization: Bearer $FZA_KEY" \
  -d lat=31.3433 -d lon=-93.85191

{
  "query": {
    "lat": 31.3433,
    "lon": -93.85191
  },
  "location": {
    "lat": 31.3433,
    "lon": -93.85191,
    "geocoder": null,
    "precision": "input_coordinates",
    "matched_address": null,
    "candidates": null,
    "county": null,
    "county_fips": null,
    "state": null
  },
  "flood_zone": {
    "mapped": true,
    "zone": "X",
    "subtype": "AREA OF MINIMAL FLOOD HAZARD",
    "description": "Area of minimal flood hazard. Outside the Special Flood Hazard Area.",
    "sfha": false,
    "static_bfe": null,
    "depth": null,
    "dfirm_id": "48403C",
    "polygon_id": "48403C_3280",
    "at_zone_boundary": false,
    "other_zones": []
  },
  "firm_panel": {
    "panel": "48403C0230B",
    "effective_date": "2026-08-04",
    "panel_type": "Countywide, Panel Printed",
    "dfirm_id": "48403C",
    "other_panels": []
  },
  "source": {
    "dataset": "FEMA National Flood Hazard Layer (NFHL)",
    "service": "https://hazards.fema.gov/arcgis/rest/services/public/NFHL/MapServer",
    "layers": [
      {
        "id": 28,
        "name": "Flood Hazard Zones"
      },
      {
        "id": 3,
        "name": "FIRM Panels"
      }
    ],
    "query_point": {
      "lat": 31.3433,
      "lon": -93.85191
    },
    "queried_at": "2026-09-29T08:37:59Z",
    "cached": true,
    "cache_ttl_seconds": 86400
  },
  "notice": "Informational. This is the zone shown on FEMA's effective flood map (NFHL) at this point. It is not a Standard Flood Hazard Determination (FEMA Form 086-0-32), a prediction of flood risk, or an insurance quote, and it does not reflect a Letter of Map Amendment issued for a single structure."
}

Every digital flood map in Texas

Counties with no digital FIRM in the NFHL

No digital flood map in the NFHL links to these counties (Census county FIPS in brackets). Addresses here return "mapped": false; FEMA may still have paper maps for them.

• Andrews County (48003)
• Armstrong County (48011)
• Bailey County (48017)
• Baylor County (48023)
• Blanco County (48031)
• Borden County (48033)
• Brewster County (48043)
• Briscoe County (48045)
• Callahan County (48059)
• Camp County (48063)
• Carson County (48065)
• Castro County (48069)
• Childress County (48075)
• Clay County (48077)
• Cochran County (48079)
• Coke County (48081)
• Coleman County (48083)
• Collingsworth County (48087)
• Comanche County (48093)
• Concho County (48095)
• Cottle County (48101)
• Crane County (48103)
• Crockett County (48105)
• Crosby County (48107)
• Culberson County (48109)
• Dallam County (48111)
• Deaf Smith County (48117)
• Delta County (48119)
• Dickens County (48125)
• Dimmit County (48127)
• Donley County (48129)
• Edwards County (48137)
• Falls County (48145)
• Fisher County (48151)
• Floyd County (48153)
• Foard County (48155)
• Franklin County (48159)
• Frio County (48163)
• Gaines County (48165)
• Garza County (48169)
• Gillespie County (48171)
• Glasscock County (48173)
• Hall County (48191)
• Hamilton County (48193)
• Hansford County (48195)
• Hardeman County (48197)
• Hartley County (48205)
• Haskell County (48207)
• Hemphill County (48211)
• Hidalgo County (48215)
• Hockley County (48219)
• Hudspeth County (48229)
• Hutchinson County (48233)
• Irion County (48235)
• Jeff Davis County (48243)
• Jefferson County (48245)
• Jim Hogg County (48247)
• Kenedy County (48261)
• Kent County (48263)
• Kimble County (48267)
• King County (48269)
• Kinney County (48271)
• Knox County (48275)
• Lamb County (48279)
• Lampasas County (48281)
• La Salle County (48283)
• Lipscomb County (48295)
• Loving County (48301)
• Lynn County (48305)
• McCulloch County (48307)
• McMullen County (48311)
• Madison County (48313)
• Marion County (48315)
• Martin County (48317)
• Mason County (48319)
• Menard County (48327)
• Midland County (48329)
• Milam County (48331)
• Mills County (48333)
• Mitchell County (48335)
• Moore County (48341)
• Morris County (48343)
• Motley County (48345)
• Nolan County (48353)
• Ochiltree County (48357)
• Oldham County (48359)
• Panola County (48365)
• Parmer County (48369)
• Pecos County (48371)
• Presidio County (48377)
• Reagan County (48383)
• Real County (48385)
• Red River County (48387)
• Reeves County (48389)
• Roberts County (48393)
• Runnels County (48399)
• San Saba County (48411)
• Schleicher County (48413)
• Scurry County (48415)
• Shackelford County (48417)
• Sherman County (48421)
• Sterling County (48431)
• Stonewall County (48433)
• Sutton County (48435)
• Swisher County (48437)
• Terrell County (48443)
• Terry County (48445)
• Throckmorton County (48447)
• Trinity County (48455)
• Upton County (48461)
• Ward County (48475)
• Wheeler County (48483)
• Wilbarger County (48487)
• Winkler County (48495)
• Yoakum County (48501)
• Zavala County (48507)

Source: FEMA NFHL layers 1, 3 and 22 and the Census Bureau county gazetteer, computed September 29, 2026. All states · API reference