Flood Zone API Get a free key

Flood map coverage in Louisiana

FEMA's National Flood Hazard Layer holds 2,193 FIRM panels for Louisiana from 52 digital flood map databases, reaching 52 of its 64 counties. Computed September 29, 2026.

2,193FIRM panels
67%took effect before September 29, 2016
2025-10-16newest panel (22003C0325E)
45LOMRs in effect

What to expect from lookups here

A real lookup in Louisiana

The point is the Census internal point of Allen Parish, the county with Louisiana's most recently effective FIRM panel. FEMA's map puts it in zone AE. Recorded September 29, 2026.

Request
curl -sG https://api.floodzoneapi.com/api/v1/flood/zone \
  -H "Authorization: Bearer $FZA_KEY" \
  -d lat=30.65274 -d lon=-92.8196
Response 200
{
  "query": {
    "lat": 30.65274,
    "lon": -92.8196
  },
  "location": {
    "lat": 30.65274,
    "lon": -92.8196,
    "geocoder": null,
    "precision": "input_coordinates",
    "matched_address": null,
    "candidates": null,
    "county": null,
    "county_fips": null,
    "state": null
  },
  "flood_zone": {
    "mapped": true,
    "zone": "AE",
    "subtype": null,
    "description": "1% annual chance flood hazard. Base flood elevations determined.",
    "sfha": true,
    "static_bfe": null,
    "depth": null,
    "dfirm_id": "22003C",
    "polygon_id": "22003C_185",
    "at_zone_boundary": false,
    "other_zones": []
  },
  "firm_panel": {
    "panel": "22003C0250D",
    "effective_date": "2011-03-17",
    "panel_type": "Countywide, Panel Printed",
    "dfirm_id": "22003C",
    "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": 30.65274,
      "lon": -92.8196
    },
    "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 Louisiana

MapDFIRM IDID typePanelsNewest panelOldest panelOver 10 years oldLOMRs in effect
Acadia Parish22001CCounty232010-11-262010-11-26233
Allen Parish22003CCounty322025-10-162011-03-17240
Ascension Parish22005CCounty212007-08-162007-08-16217
Assumption Parish22007CCounty132018-09-142018-09-1400
Beauregard Parish22011CCounty332018-01-052010-11-26210
Bienville Parish22013CCounty462006-07-032006-07-03460
Bossier Parish22015CCounty862013-03-192008-09-26861
Caddo Parish22017CCounty1002014-05-192014-05-191000
Calcasieu Parish22019CCounty1352019-05-162011-02-181251
Caldwell Parish22021CCounty242012-09-052012-09-05240
Cameron Parish22023CCounty512012-11-162012-11-16510
City of Mandeville220202Community-numbered72012-05-162012-05-1672
De Soto Parish22031CCounty432003-12-162003-12-16430
East Baton Rouge Parish22033CCounty462012-06-192008-05-02465
East Feliciana Parish22037CCounty292024-07-312012-04-03101
Evangeline Parish22039CCounty242010-09-032010-09-03240
Franklin Parish22041CCounty582018-10-052011-09-02150
Grant Parish22043CCounty422016-06-162016-06-16420
Iberia Parish22045CCounty472011-12-022011-12-02472
Iberville Parish22047CCounty472013-11-062013-11-06470
Jackson Parish22049CCounty282020-08-192020-08-1900
Jefferson Davis Parish22053CCounty202010-07-222010-07-22200
Jefferson Parish22051CCounty382018-02-022018-02-0201
Lafayette Parish22055CCounty232018-12-212018-12-2108
LaSalle Parish22059CCounty302023-02-232023-02-2300
Lincoln Parish22061CCounty222009-04-022009-04-02221
Livingston Parish22063CCounty312012-04-032012-04-03312
Madison Parish22065CCounty592012-06-192012-06-19481
Morehouse Parish22067CCounty272016-07-062016-07-06271
Natchitoches Parish22069CCounty652015-07-062015-07-06650
Orleans Parish22071CCounty562016-09-302016-09-3000
Ouachita Parish22073CCounty642016-01-202016-01-20643
Plaquemines Parish22075CCounty702021-01-152021-01-1500
Richland Parish22083CCounty662013-09-182013-09-18660
St. Bernard Parish22087CCounty822017-12-212017-12-2100
St. Helena Parish22091CCounty272013-04-022013-04-02270
St. James Parish22093CCounty112011-07-042011-07-04110
St. John the Baptist Parish22095CCounty182010-11-042010-11-04180
St. Landry Parish22097CCounty342010-08-052010-08-05340
St. Martin Parish22099CCounty312010-11-042010-11-04311
St. Mary Parish22101CCounty452017-04-192017-04-1900
Tangipahoa Parish22105CCounty382010-07-222010-07-22384
Terrebonne Parish22109CCounty562023-09-072023-09-0700
Union Parish22111CCounty262011-07-042011-07-04260
Vermilion Parish22113CCounty442011-01-192011-01-19440
Vernon Parish22115CCounty332018-03-202011-03-03140
Washington Parish22117CCounty252009-12-032009-12-03250
Webster Parish22119CCounty332010-03-022010-03-02330
West Baton Rouge Parish22121CCounty152014-07-162014-07-16150
West Carroll Parish22123CCounty432018-10-052018-10-0500
West Feliciana Parish22125CCounty802024-07-312024-07-3101
Winn Parish22127CCounty462020-08-192020-08-1900
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