Flood map coverage in Mississippi
FEMA's National Flood Hazard Layer holds 3,129 FIRM panels for Mississippi from 82 digital flood map databases, reaching 82 of its 82 counties. Computed September 29, 2026.
3,129FIRM panels
78%took effect before September 29, 2016
2025-11-28newest panel (28025C0215E)
32LOMRs in effect
What to expect from lookups here
- Every county has at least one digital FIRM in the NFHL.
- The map that has gone longest without a new panel is Kemper County (28069C), last revised 2007-09-05.
- 4 panels carry a placeholder effective date in FEMA's data; for points on those panels
firm_panel.effective_dateisnull.
A real lookup in Mississippi
The point is the Census internal point of Clay County, the county with Mississippi'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=33.65967 -d lon=-88.78247{
"query": {
"lat": 33.65967,
"lon": -88.78247
},
"location": {
"lat": 33.65967,
"lon": -88.78247,
"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": "28025C",
"polygon_id": "28025C_81",
"at_zone_boundary": false,
"other_zones": []
},
"firm_panel": {
"panel": "28025C0175D",
"effective_date": "2011-05-03",
"panel_type": "Countywide, Panel Printed",
"dfirm_id": "28025C",
"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": 33.65967,
"lon": -88.78247
},
"queried_at": "2026-09-29T08:37:46Z",
"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 Mississippi
| Map | DFIRM ID | ID type | Panels | Newest panel | Oldest panel | Over 10 years old | LOMRs in effect |
|---|---|---|---|---|---|---|---|
| Adams County | 28001C | County | 25 | 2011-06-16 | 2011-06-16 | 25 | 0 |
| Alcorn County | 28003C | County | 28 | 2010-09-17 | 2010-09-17 | 28 | 0 |
| Amite County | 28005C | County | 24 | 2010-09-29 | 2010-09-29 | 24 | 0 |
| Attala County | 28007C | County | 32 | 2011-08-02 | 2011-08-02 | 32 | 0 |
| Benton County | 28009C | County | 16 | 2008-10-02 | 2008-10-02 | 16 | 0 |
| Bolivar County | 28011C | County | 55 | 2021-03-23 | 2017-03-21 | 0 | 0 |
| Calhoun County | 28013C | County | 31 | 2010-08-19 | 2010-08-19 | 31 | 0 |
| Carroll County | 28015C | County | 28 | 2025-03-11 | 2017-05-02 | 0 | 0 |
| Chickasaw County | 28017C | County | 23 | 2025-11-28 | 2010-01-06 | 20 | 0 |
| Choctaw County | 28019C | County | 22 | 2007-09-28 | 2007-09-28 | 22 | 0 |
| Claiborne County | 28021C | County | 23 | 2021-07-20 | 2010-04-19 | 19 | 0 |
| Clarke County | 28023C | County | 41 | 2011-09-02 | 2011-09-02 | 41 | 0 |
| Clay County | 28025C | County | 31 | 2025-11-28 | 2011-05-03 | 24 | 0 |
| Coahoma County | 28027C | County | 35 | 2021-12-16 | 2012-02-02 | 13 | 0 |
| Copiah County | 28029C | County | 23 | 2008-12-16 | 2008-12-16 | 23 | 2 |
| Covington County | 28031C | County | 28 | 2010-04-05 | 2010-04-05 | 28 | 0 |
| DeSoto County | 28033C | County | 64 | 2018-03-06 | 2007-06-04 | 50 | 8 |
| Forrest County | 28035C | County | 56 | 2021-11-19 | 2010-03-02 | 44 | 0 |
| Franklin County | 28037C | County | 23 | 2010-01-06 | 2010-01-06 | 23 | 0 |
| George County | 28039C | County | 21 | 2012-09-19 | 2008-10-16 | 21 | 0 |
| Greene County | 28041C | County | 34 | 2021-11-19 | 2012-01-06 | 29 | 0 |
| Grenada County | 28043C | County | 23 | 2011-05-24 | 2011-05-24 | 23 | 0 |
| Hancock County | 28045C | County | 97 | 2019-09-27 | 2009-10-16 | 95 | 1 |
| Harrison County | 28047C | County | 101 | 2017-12-21 | 2009-06-16 | 92 | 7 |
| Hinds County | 28049C | County | 78 | 2021-07-20 | 2009-11-18 | 62 | 0 |
| Holmes County | 28051C | County | 47 | 2025-01-17 | 2012-01-18 | 41 | 0 |
| Humphreys County | 28053C | County | 36 | 2021-03-23 | 2012-03-15 | 25 | 0 |
| Issaquena County | 28055C | County | 22 | 2012-02-16 | 2012-02-16 | 22 | 0 |
| Itawamba County | 28057C | County | 34 | 2025-11-28 | 2019-02-15 | 0 | 0 |
| Jackson County | 28059C | County | 129 | 2017-12-21 | 2009-03-16 | 122 | 0 |
| Jasper County | 28061C | County | 30 | 2011-07-04 | 2011-07-04 | 30 | 0 |
| Jefferson County | 28063C | County | 17 | 2010-09-29 | 2010-09-29 | 17 | 0 |
| Jefferson Davis County | 28065C | County | 28 | 2010-12-17 | 2010-12-17 | 28 | 0 |
| Jones County | 28067C | County | 36 | 2021-11-19 | 2010-09-29 | 24 | 0 |
| Kemper County | 28069C | County | 30 | 2007-09-05 | 2007-09-05 | 30 | 0 |
| Lafayette County | 28071C | County | 42 | 2010-11-26 | 2010-11-26 | 42 | 4 |
| Lamar County | 28073C | County | 45 | 2019-10-18 | 2010-03-02 | 43 | 1 |
| Lauderdale County | 28075C | County | 64 | 2013-05-16 | 2010-02-03 | 64 | 0 |
| Lawrence County | 28077C | County | 21 | 2011-06-02 | 2011-06-02 | 21 | 0 |
| Leake County | 28079C | County | 25 | 2011-09-16 | 2011-09-16 | 25 | 0 |
| Lee County | 28081C | County | 64 | 2025-11-28 | 2010-02-03 | 56 | 2 |
| Leflore County | 28083C | County | 53 | 2025-01-17 | 2012-05-16 | 52 | 0 |
| Lincoln County | 28085C | County | 28 | 2010-02-03 | 2010-02-03 | 28 | 0 |
| Lowndes County | 28087C | County | 39 | 2025-11-28 | 2011-02-18 | 29 | 0 |
| Madison County | 28089C | County | 56 | 2025-01-17 | 2010-03-17 | 31 | 0 |
| Marion County | 28091C | County | 21 | 2019-10-18 | 2011-07-18 | 6 | 0 |
| Marshall County | 28093C | County | 30 | 2021-05-04 | 2011-07-04 | 21 | 0 |
| Monroe County | 28095C | County | 71 | 2025-11-28 | 2019-02-15 | 0 | 0 |
| Montgomery County | 28097C | County | 21 | 2025-03-11 | 2010-09-17 | 19 | 0 |
| Neshoba County | 28099C | County | 31 | 2010-06-04 | 2010-06-04 | 31 | 0 |
| Newton County | 28101C | County | 34 | 2010-12-17 | 2010-12-17 | 34 | 0 |
| Noxubee County | 28103C | County | 25 | 2011-06-02 | 2011-06-02 | 25 | 0 |
| Oktibbeha County | 28105C | County | 32 | 2010-02-17 | 2010-02-17 | 32 | 1 |
| Panola County | 28107C | County | 59 | 2021-03-23 | 2017-05-16 | 0 | 1 |
| Pearl River County | 28109C | County | 88 | 2019-09-27 | 2008-06-03 | 70 | 0 |
| Perry County | 28111C | County | 26 | 2021-11-19 | 2011-12-16 | 19 | 0 |
| Pike County | 28113C | County | 23 | 2010-06-18 | 2010-06-18 | 23 | 0 |
| Pontotoc County | 28115C | County | 29 | 2010-08-19 | 2010-08-19 | 29 | 0 |
| Prentiss County | 28117C | County | 37 | 2025-11-28 | 2011-07-18 | 10 | 0 |
| Quitman County | 28119C | County | 36 | 2021-05-04 | 2017-05-16 | 0 | 0 |
| Rankin County | 28121C | County | 100 | 2022-08-16 | 2014-06-09 | 76 | 2 |
| Scott County | 28123C | County | 31 | 2021-07-20 | 2010-12-17 | 30 | 0 |
| Sharkey County | 28125C | County | 25 | 2024-08-14 | 2012-03-02 | 22 | 0 |
| Simpson County | 28127C | County | 35 | 2011-09-02 | 2011-09-02 | 35 | 0 |
| Smith County | 28129C | County | 26 | 2021-07-20 | 2011-08-16 | 25 | 0 |
| Stone County | 28131C | County | 17 | 2011-06-16 | 2011-06-16 | 17 | 0 |
| Sunflower County | 28133C | County | 50 | 2021-03-23 | 2012-01-18 | 17 | 0 |
| Tallahatchie County | 28135C | County | 39 | 2021-03-23 | 2017-05-16 | 0 | 0 |
| Tate County | 28137C | County | 27 | 2021-05-04 | 2009-01-02 | 25 | 0 |
| Tippah County | 28139C | County | 21 | 2010-06-18 | 2010-06-18 | 21 | 0 |
| Tishomingo County | 28141C | County | 44 | 2025-11-28 | 2010-12-17 | 29 | 0 |
| Tunica County | 28143C | County | 39 | 2021-05-04 | 2008-10-16 | 33 | 0 |
| Union County | 28145C | County | 20 | 2010-09-03 | 2010-09-03 | 20 | 2 |
| Walthall County | 28147C | County | 16 | 2019-10-18 | 2010-07-06 | 13 | 0 |
| Warren County | 28149C | County | 45 | 2013-07-16 | 2008-11-05 | 45 | 1 |
| Washington County | 28151C | County | 52 | 2024-08-28 | 2012-05-02 | 34 | 0 |
| Wayne County | 28153C | County | 28 | 2011-07-18 | 2011-07-18 | 28 | 0 |
| Webster County | 28155C | County | 25 | 2010-01-06 | 2010-01-06 | 25 | 0 |
| Wilkinson County | 28157C | County | 24 | 2010-04-19 | 2010-04-19 | 24 | 0 |
| Winston County | 28159C | County | 29 | 2010-09-17 | 2010-09-17 | 29 | 0 |
| Yalobusha County | 28161C | County | 20 | 2021-03-23 | 2010-09-17 | 14 | 0 |
| Yazoo County | 28163C | County | 45 | 2025-01-31 | 2012-02-16 | 40 | 0 |
Source: FEMA NFHL layers 1, 3 and 22 and the Census Bureau county gazetteer, computed September 29, 2026. All states ยท API reference