Flood map coverage in Wisconsin
FEMA's National Flood Hazard Layer holds 9,097 FIRM panels for Wisconsin from 67 digital flood map databases, reaching 67 of its 72 counties. Computed September 29, 2026.
9,097FIRM panels
80%took effect before September 29, 2016
2026-03-17newest panel (55067C0230C)
164LOMRs in effect
What to expect from lookups here
- 5 counties have no digital FIRM in the NFHL (listed below). Points there come back
"mapped": false. - The map that has gone longest without a new panel is Winnebago County (55139C), last revised 2003-03-17.
- 18 panels carry a placeholder effective date in FEMA's data; for points on those panels
firm_panel.effective_dateisnull.
A real lookup in Wisconsin
The point is the Census internal point of Langlade County, the county with Wisconsin'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=45.25486 -d lon=-89.06707{
"query": {
"lat": 45.25486,
"lon": -89.06707
},
"location": {
"lat": 45.25486,
"lon": -89.06707,
"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": "55067C",
"polygon_id": "55067C_684",
"at_zone_boundary": false,
"other_zones": []
},
"firm_panel": {
"panel": "55067C0265C",
"effective_date": "2026-03-17",
"panel_type": "Countywide, Panel Printed",
"dfirm_id": "55067C",
"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": 45.25486,
"lon": -89.06707
},
"queried_at": "2026-09-29T08:38:04Z",
"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 Wisconsin
| Map | DFIRM ID | ID type | Panels | Newest panel | Oldest panel | Over 10 years old | LOMRs in effect |
|---|---|---|---|---|---|---|---|
| Adams County | 55001C | County | 111 | 2008-06-17 | 2008-06-17 | 111 | 0 |
| Barron County | 55005C | County | 165 | 2009-12-03 | 2009-12-03 | 165 | 1 |
| Bayfield County | 55007C | County | 195 | 2011-12-16 | 2011-12-16 | 195 | 0 |
| Brown County | 55009C | County | 162 | 2023-05-09 | 2009-08-18 | 122 | 30 |
| Buffalo County | 55011C | County | 81 | 2010-05-03 | 2010-05-03 | 81 | 2 |
| Burnett County | 55013C | County | 183 | 2008-08-19 | 2008-08-19 | 183 | 1 |
| Calumet County | 55015C | County | 110 | 2009-02-04 | 2009-02-04 | 110 | 2 |
| Chippewa County | 55017C | County | 136 | 2023-10-19 | 2010-03-02 | 134 | 2 |
| Clark County | 55019C | County | 107 | 2010-07-06 | 2010-07-06 | 107 | 2 |
| Columbia County | 55021C | County | 191 | 2016-05-16 | 2016-05-16 | 191 | 0 |
| Crawford County | 55023C | County | 140 | 2015-10-16 | 2010-12-17 | 140 | 1 |
| Dane County | 55025C | County | 265 | 2025-04-09 | 2009-01-02 | 258 | 17 |
| Dodge County | 55027C | County | 173 | 2014-05-19 | 2010-04-19 | 173 | 2 |
| Door County | 55029C | County | 206 | 2024-05-08 | 2009-03-02 | 97 | 0 |
| Douglas County | 55031C | County | 218 | 2012-02-02 | 2012-02-02 | 218 | 0 |
| Dunn County | 55033C | County | 188 | 2011-12-02 | 2011-12-02 | 188 | 1 |
| Eau Claire County | 55035C | County | 90 | 2014-04-16 | 2009-02-18 | 90 | 5 |
| Florence County | 55037C | County | 62 | 2023-08-15 | 2023-08-15 | 0 | 0 |
| Fond du Lac County | 55039C | County | 129 | 2024-12-20 | 2009-11-04 | 99 | 2 |
| Forest County | 55041C | County | 111 | 2011-12-16 | 2011-12-16 | 111 | 0 |
| Grant County | 55043C | County | 198 | 2016-02-03 | 2011-09-02 | 198 | 0 |
| Green County | 55045C | County | 95 | 2009-05-18 | 2009-05-18 | 95 | 2 |
| Green Lake County | 55047C | County | 66 | 2010-02-03 | 2010-02-03 | 66 | 2 |
| Iowa County | 55049C | County | 155 | 2015-12-16 | 2015-12-16 | 155 | 0 |
| Iron County | 55051C | County | 101 | 2023-05-23 | 2023-05-23 | 0 | 0 |
| Jackson County | 55053C | County | 145 | 2017-09-29 | 2012-09-28 | 144 | 2 |
| Jefferson County | 55055C | County | 181 | 2015-02-04 | 2009-06-02 | 181 | 1 |
| Juneau County | 55057C | County | 178 | 2012-10-16 | 2012-10-16 | 178 | 1 |
| Kenosha County | 55059C | County | 111 | 2024-04-11 | 2012-06-19 | 66 | 23 |
| Kewaunee County | 55061C | County | 76 | 2024-08-28 | 2024-08-28 | 0 | 0 |
| La Crosse County | 55063C | County | 120 | 2012-01-06 | 2012-01-06 | 120 | 2 |
| Lafayette County | 55065C | County | 116 | 2020-12-17 | 2020-12-17 | 0 | 0 |
| Langlade County | 55067C | County | 104 | 2026-03-17 | 2026-03-17 | 0 | 0 |
| Lincoln County | 55069C | County | 148 | 2011-08-16 | 2011-08-16 | 148 | 0 |
| Manitowoc County | 55071C | County | 143 | 2023-02-23 | 2011-08-02 | 117 | 2 |
| Marathon County | 55073C | County | 129 | 2018-09-28 | 2010-07-22 | 123 | 5 |
| Marquette County | 55077C | County | 86 | 2012-12-18 | 2012-12-18 | 86 | 0 |
| Milwaukee County | 55079C | County | 111 | 2024-10-24 | 2024-10-24 | 0 | 0 |
| Monroe County | 55081C | County | 160 | 2019-12-06 | 2010-01-20 | 144 | 1 |
| Oconto County | 55083C | County | 232 | 2023-03-21 | 2010-10-06 | 206 | 0 |
| Oneida County | 55085C | County | 158 | 2013-05-16 | 2013-05-16 | 158 | 0 |
| Outagamie County | 55087C | County | 104 | 2016-01-20 | 2010-07-22 | 104 | 21 |
| Ozaukee County | 55089C | County | 113 | 2024-07-31 | 2024-07-31 | 0 | 1 |
| Pepin County | 55091C | County | 43 | 2010-08-19 | 2010-08-19 | 43 | 2 |
| Pierce County | 55093C | County | 85 | 2020-12-30 | 2011-11-16 | 83 | 1 |
| Polk County | 55095C | County | 120 | 2011-09-16 | 2011-09-16 | 120 | 0 |
| Portage County | 55097C | County | 80 | 2009-07-20 | 2009-07-20 | 80 | 4 |
| Racine County | 55101C | County | 162 | 2024-01-11 | 2012-05-02 | 104 | 2 |
| Richland County | 55103C | County | 96 | 2016-12-08 | 2016-12-08 | 0 | 0 |
| Rock County | 55105C | County | 182 | 2015-09-16 | 2015-09-16 | 182 | 1 |
| Rusk County | 55107C | County | 134 | 2014-03-17 | 2014-03-17 | 116 | 1 |
| Sauk County | 55111C | County | 209 | 2015-10-02 | 2009-12-18 | 209 | 2 |
| Shawano County | 55115C | County | 158 | 2024-07-17 | 2024-07-17 | 0 | 0 |
| Sheboygan County | 55117C | County | 149 | 2024-08-28 | 2009-04-02 | 106 | 4 |
| St. Croix County | 55109C | County | 172 | 2009-03-16 | 2009-03-16 | 172 | 4 |
| Taylor County | 55119C | County | 104 | 2024-03-13 | 2024-03-13 | 0 | 0 |
| Trempealeau County | 55121C | County | 88 | 2011-04-04 | 2011-04-04 | 88 | 2 |
| Vernon County | 55123C | County | 148 | 2012-11-02 | 2012-11-02 | 148 | 0 |
| Vilas County | 55125C | County | 77 | 2012-06-05 | 2012-06-05 | 77 | 0 |
| Walworth County | 55127C | County | 149 | 2022-04-06 | 2009-10-02 | 100 | 1 |
| Washburn County | 55129C | County | 127 | 2012-10-02 | 2012-10-02 | 127 | 0 |
| Washington County | 55131C | County | 181 | 2026-02-20 | 2013-11-20 | 34 | 0 |
| Waukesha County | 55133C | County | 205 | 2023-10-19 | 2014-11-05 | 85 | 4 |
| Waupaca County | 55135C | County | 120 | 2010-01-20 | 2010-01-20 | 120 | 2 |
| Waushara County | 55137C | County | 88 | 2013-06-18 | 2013-06-18 | 88 | 0 |
| Winnebago County | 55139C | County | 46 | 2003-03-17 | 2003-03-17 | 46 | 2 |
| Wood County | 55141C | County | 121 | 2010-02-17 | 2010-02-17 | 121 | 1 |
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.
- Ashland County (55003)
- Marinette County (55075)
- Menominee County (55078)
- Price County (55099)
- Sawyer County (55113)
Source: FEMA NFHL layers 1, 3 and 22 and the Census Bureau county gazetteer, computed September 29, 2026. All states ยท API reference