Flood map coverage in Pennsylvania
FEMA's National Flood Hazard Layer holds 8,414 FIRM panels for Pennsylvania from 67 digital flood map databases, reaching 67 of its 67 counties. Computed September 29, 2026.
8,414FIRM panels
81%took effect before September 29, 2016
2024-07-31newest panel (42037C0266F)
181LOMRs in effect
What to expect from lookups here
- Every county has at least one digital FIRM in the NFHL.
- 1 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 Pike County (42103C), last revised 2000-10-06.
- 8 panels carry a placeholder effective date in FEMA's data; for points on those panels
firm_panel.effective_dateisnull.
A real lookup in Pennsylvania
The point is the Census internal point of Columbia County, the county with Pennsylvania'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=41.04552 -d lon=-76.40426{
"query": {
"lat": 41.04552,
"lon": -76.40426
},
"location": {
"lat": 41.04552,
"lon": -76.40426,
"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": "42037C",
"polygon_id": "42037C_1338",
"at_zone_boundary": false,
"other_zones": []
},
"firm_panel": {
"panel": "42037C0242F",
"effective_date": "2024-07-31",
"panel_type": "Countywide, Panel Printed",
"dfirm_id": "42037C",
"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": 41.04552,
"lon": -76.40426
},
"queried_at": "2026-09-29T08:37:56Z",
"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 Pennsylvania
| Map | DFIRM ID | ID type | Panels | Newest panel | Oldest panel | Over 10 years old | LOMRs in effect |
|---|---|---|---|---|---|---|---|
| Adams County | 42001C | County | 127 | 2020-07-22 | 2009-02-18 | 55 | 3 |
| Allegheny County | 42003C | County | 216 | 2014-09-26 | 2014-09-26 | 208 | 11 |
| Armstrong County | 42005C | County | 127 | 2016-02-17 | 2016-02-17 | 127 | 1 |
| Beaver County | 42007C | County | 112 | 2015-08-17 | 2015-08-17 | 112 | 1 |
| Bedford County | 42009C | County | 158 | 2012-03-02 | 2012-03-02 | 158 | 2 |
| Berks County | 42011C | County | 232 | 2017-03-21 | 2012-07-03 | 230 | 4 |
| Blair County | 42013C | County | 145 | 2018-05-02 | 2012-03-02 | 135 | 6 |
| Bradford County | 42015C | County | 177 | 2024-07-17 | 2014-10-16 | 139 | 0 |
| Bucks County | 42017C | County | 200 | 2017-03-21 | 2015-03-16 | 162 | 7 |
| Butler County | 42019C | County | 133 | 2018-08-02 | 2018-08-02 | 0 | 2 |
| Cambria County | 42021C | County | 128 | 2012-06-19 | 2012-06-19 | 128 | 0 |
| Cameron County | 42023C | County | 59 | 2011-07-04 | 2011-07-04 | 59 | 0 |
| Carbon County | 42025C | County | 82 | 2002-06-03 | 2002-06-03 | 82 | 0 |
| Centre County | 42027C | County | 139 | 2015-01-16 | 2009-05-04 | 139 | 4 |
| Chester County | 42029C | County | 76 | 2017-09-29 | 2017-09-29 | 0 | 12 |
| City of Philadelphia | 420757 | Community-numbered | 59 | 2015-11-18 | 2007-01-17 | 59 | 10 |
| Clarion County | 42031C | County | 75 | 2014-12-09 | 2011-12-02 | 75 | 0 |
| Clearfield County | 42033C | County | 145 | 2011-11-02 | 2011-11-02 | 145 | 0 |
| Clinton County | 42035C | County | 133 | 2016-06-16 | 2008-09-26 | 133 | 2 |
| Columbia County | 42037C | County | 115 | 2024-07-31 | 2024-07-31 | 0 | 0 |
| Crawford County | 42039C | County | 163 | 2012-08-16 | 2012-08-16 | 163 | 2 |
| Cumberland County | 42041C | County | 125 | 2023-09-07 | 2009-03-16 | 17 | 0 |
| Dauphin County | 42043C | County | 108 | 2012-08-02 | 2012-08-02 | 108 | 11 |
| Delaware County | 42045C | County | 84 | 2017-11-03 | 2009-11-18 | 74 | 10 |
| Elk County | 42047C | County | 151 | 2016-06-27 | 2012-01-18 | 151 | 1 |
| Erie County | 42049C | County | 164 | 2017-06-07 | 2014-02-19 | 136 | 0 |
| Fayette County | 42051C | County | 175 | 2017-07-18 | 2017-07-18 | 0 | 0 |
| Forest County | 42053C | County | 61 | 2010-11-26 | 2010-11-26 | 61 | 0 |
| Franklin County | 42055C | County | 118 | 2012-01-18 | 2012-01-18 | 118 | 1 |
| Fulton County | 42057C | County | 51 | 2011-02-18 | 2011-02-18 | 51 | 0 |
| Greene County | 42059C | County | 85 | 2015-10-16 | 2015-10-16 | 85 | 0 |
| Huntingdon County | 42061C | County | 150 | 2018-05-02 | 2012-10-16 | 146 | 1 |
| Indiana County | 42063C | County | 136 | 2012-04-03 | 2012-04-03 | 136 | 1 |
| Jefferson County | 42065C | County | 96 | 2012-03-15 | 2012-03-15 | 96 | 1 |
| Juniata County | 42067C | County | 82 | 2021-02-26 | 2012-10-02 | 79 | 1 |
| Lackawanna County | 42069C | County | 103 | 2020-08-05 | 2020-08-05 | 0 | 11 |
| Lancaster County | 42071C | County | 239 | 2016-04-05 | 2016-04-05 | 239 | 9 |
| Lawrence County | 42073C | County | 79 | 2012-01-18 | 2012-01-18 | 79 | 0 |
| Lebanon County | 42075C | County | 97 | 2020-07-08 | 2020-07-08 | 0 | 0 |
| Lehigh County | 42077C | County | 88 | 2004-07-16 | 2004-07-16 | 88 | 6 |
| Luzerne County | 42079C | County | 209 | 2024-06-20 | 2012-11-02 | 169 | 3 |
| Lycoming County | 42081C | County | 197 | 2016-06-02 | 2016-06-02 | 197 | 2 |
| McKean County | 42083C | County | 142 | 2016-12-22 | 2016-12-22 | 0 | 0 |
| Mercer County | 42085C | County | 97 | 2014-06-09 | 2014-06-09 | 97 | 2 |
| Mifflin County | 42087C | County | 57 | 2006-08-16 | 2006-08-16 | 57 | 1 |
| Monroe County | 42089C | County | 132 | 2013-05-02 | 2013-05-02 | 132 | 3 |
| Montgomery County | 42091C | County | 174 | 2016-03-02 | 2016-03-02 | 174 | 25 |
| Montour County | 42093C | County | 31 | 2022-08-16 | 2008-05-16 | 18 | 2 |
| Northampton County | 42095C | County | 101 | 2014-07-16 | 2014-07-16 | 101 | 2 |
| Northumberland County | 42097C | County | 68 | 2016-09-16 | 2008-07-16 | 68 | 2 |
| Perry County | 42099C | County | 113 | 2019-06-20 | 2009-06-16 | 40 | 0 |
| Pike County | 42103C | County | 80 | 2000-10-06 | 2000-10-06 | 80 | 1 |
| Potter County | 42105C | County | 129 | 2011-07-18 | 2011-07-18 | 129 | 2 |
| Schuylkill County | 42107C | County | 168 | 2021-05-18 | 2014-11-19 | 20 | 0 |
| Snyder County | 42109C | County | 57 | 2021-08-24 | 2007-11-16 | 33 | 0 |
| Somerset County | 42111C | County | 147 | 2012-09-19 | 2012-09-19 | 147 | 2 |
| Sullivan County | 42113C | County | 67 | 2014-03-03 | 2014-03-03 | 67 | 0 |
| Susquehanna County | 42115C | County | 109 | 2013-04-02 | 2013-04-02 | 109 | 1 |
| Tioga County | 42117C | County | 157 | 2015-07-16 | 2015-07-16 | 157 | 0 |
| Union County | 42119C | County | 44 | 2021-02-26 | 2007-09-28 | 38 | 1 |
| Venango County | 42121C | County | 116 | 2014-01-16 | 2014-01-16 | 116 | 0 |
| Warren County | 42123C | County | 110 | 2017-03-21 | 2017-03-21 | 0 | 0 |
| Washington County | 42125C | County | 160 | 2015-09-30 | 2015-09-30 | 160 | 3 |
| Wayne County | 42127C | County | 154 | 2019-02-01 | 2013-05-16 | 152 | 1 |
| Westmoreland County | 42129C | County | 273 | 2011-03-17 | 2011-03-17 | 273 | 2 |
| Wyoming County | 42131C | County | 85 | 2022-05-17 | 2012-08-02 | 57 | 0 |
| York County | 42133C | County | 244 | 2015-12-16 | 2015-12-16 | 244 | 6 |
Source: FEMA NFHL layers 1, 3 and 22 and the Census Bureau county gazetteer, computed September 29, 2026. All states ยท API reference