Flood Zone API Get a free key

Flood map coverage in Maine

FEMA's National Flood Hazard Layer holds 3,283 FIRM panels for Maine from 17 digital flood map databases, reaching 13 of its 16 counties. Computed September 29, 2026.

3,283FIRM panels
59%took effect before September 29, 2016
2024-07-17newest panel (23031C0569G)
57LOMRs in effect

What to expect from lookups here

A real lookup in Maine

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

Request
curl -sG https://api.floodzoneapi.com/api/v1/flood/zone \
  -H "Authorization: Bearer $FZA_KEY" \
  -d lat=43.42602 -d lon=-70.66842
Response 200
{
  "query": {
    "lat": 43.42602,
    "lon": -70.66842
  },
  "location": {
    "lat": 43.42602,
    "lon": -70.66842,
    "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": "23031C",
    "polygon_id": "23031C_3855",
    "at_zone_boundary": false,
    "other_zones": []
  },
  "firm_panel": {
    "panel": "23031C0416G",
    "effective_date": "2024-07-17",
    "panel_type": "Countywide, Panel Printed",
    "dfirm_id": "23031C",
    "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": 43.42602,
      "lon": -70.66842
    },
    "queried_at": "2026-09-29T08:37:42Z",
    "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 Maine

MapDFIRM IDID typePanelsNewest panelOldest panelOver 10 years oldLOMRs in effect
Androscoggin County23001CCounty1672013-07-082013-07-081672
Cumberland County23005CCounty3572024-06-202024-06-2008
Hancock County23009CCounty4602016-07-202016-07-2046013
Kennebec County23011CCounty2012011-06-162011-06-162011
Knox County23013CCounty2172016-07-062016-07-062175
Lincoln County23015CCounty1842015-07-162015-07-161844
Oxford County23017CCounty3912009-07-072009-07-073914
Penobscot County23019CCounty2112023-07-192023-07-1901
Sagadahoc County23023CCounty1122015-07-162015-07-161120
Town of Allagash230440Community-numbered232003-04-022003-04-02230
Town of Eagle Lake230016Community-numbered72006-08-022006-08-0270
Town of Fort Kent230019Community-numbered292016-07-062016-07-06291
Town of Mapleton230025Community-numbered122007-12-182007-12-18120
Town of Van Buren230036Community-numbered92008-01-162008-01-1690
Waldo County23027CCounty1362015-07-062015-07-061360
Washington County23029CCounty4612017-07-182017-07-18014
York County23031CCounty3062024-07-172024-07-1704
Dates are panel effective dates (YYYY-MM-DD). "Placeholder" means FEMA's record carries a non-date such as 9999-09-09. "Over 10 years old" counts panels effective before September 29, 2016. "LOMRs in effect" are Letters of Map Revision not yet folded into a new FIRM. The DFIRM ID appears in responses as flood_zone.dfirm_id and firm_panel.dfirm_id.

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.

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