Jefferson County, PA zoning map, flood zone and property lines by address

Towns in Jefferson County: Punxsutawney, Brookville, Reynoldsville.

Flood zone by address

ParcelSheet reads FEMA's National Flood Hazard Layer at the lot: the zone, whether it is a high risk area where lenders ask for flood insurance, and the base flood elevation where FEMA lists one. FEMA's countywide study for Jefferson County has 96 FIRM panels, the newest effective March 2012; no coastal V zones are mapped in it.

The official panel and any Letter of Map Amendment are at FEMA's Map Service Center. An elevation certificate for a Jefferson house comes from a licensed surveyor and is often on file with the county or city building office.

Property lines

The parcel outline, parcel number and mapped size come from the Pennsylvania county parcel layers (each county publishes its own), so a Jefferson lot shows the same lines the county assessment office draws. Jefferson County covers about 417,582 acres of land and 2,791 acres of water.

Mapped lines are approximate. The Jefferson County assessment office keeps the parcel record (Jefferson County website); a licensed surveyor sets the true corners.

Zoning

In Pennsylvania zoning is set by the township, borough or city, or the county where the municipality has no zoning of its own: in Jefferson County, Punxsutawney, Brookville, Reynoldsville each zone the land inside their limits. ParcelSheet shows the use code on the lot's parcel record and the municipality it sits in; the township or borough zoning office has the district, the uses it allows and the lot size it needs. The Jefferson County website lists the county's municipalities.

ADU and guest houses

Under Pennsylvania Municipalities Planning Code (Act 247 of 1968, 53 P.S. 10101 and following), the township, borough or city, or the county where the municipality has no zoning of its own can allow an accessory dwelling unit on a lot with a house. Whether a Jefferson lot can add one depends on its district; the township or borough zoning office has the rule. ParcelSheet shows the mapped lot size and the ground's slope, the first two things the question turns on.

Septic and soil

ParcelSheet reads the USDA soil survey at the lot: the soil's name, its septic absorption rating and whether it is prime farmland. Jefferson County is soil survey area PA065, Jefferson County, Pennsylvania, last updated September 2026, on Web Soil Survey.

A new or changed septic system in Jefferson County needs a permit from the local agency's sewage enforcement officer (the township, borough, joint agency or county health department, under Pennsylvania DEP Act 537 rules).

Setbacks

Setbacks in Jefferson County come from the zoning district: the front, side and rear distances a house must keep. ParcelSheet does not draw setback lines; the township or borough zoning office gives them for the lot's district, and Punxsutawney, Brookville, Reynoldsville for land inside their limits.

Hazards that apply

• Wetlands and wildfire. ParcelSheet shows the National Wetlands Inventory near a Jefferson lot and the Forest Service wildfire hazard rating at it.

Questions

Is my house in a flood zone in Jefferson County?

Type the address in the box above and ParcelSheet reads FEMA's flood zone at the lot's center. FEMA's countywide flood map for Jefferson County has 96 panels, the newest effective March 2012. A lender or insurer uses the official FIRM panel; FEMA's Map Service Center has it.

How do I find property lines in Jefferson County?

Open the Pennsylvania map, type the address, and the parcel outline from the Jefferson County assessment office shows on the map with its parcel number and mapped size. Mapped lines are approximate; only a licensed surveyor sets the true corners.

What is my property zoned in Jefferson County?

Zoning in Jefferson County is set by the township, borough or city, or the county where the municipality has no zoning of its own (such as Punxsutawney, Brookville). ParcelSheet shows the use code on the parcel record and names the municipality; the township or borough zoning office has the final word.

Can I build an ADU in Jefferson County?

Under Pennsylvania Municipalities Planning Code (Act 247 of 1968, 53 P.S. 10101 and following), the township, borough or city, or the county where the municipality has no zoning of its own can allow an accessory dwelling unit, and each sets its own rules. In Jefferson County ask the township or borough zoning office for the lot's district first; ParcelSheet shows the lot size as mapped so you can see the room you have.

Do I need a septic permit in Jefferson County?

Yes. A new or changed septic system in Jefferson County needs a permit from the local agency's sewage enforcement officer (the township, borough, joint agency or county health department, under Pennsylvania DEP Act 537 rules). ParcelSheet shows the USDA soil survey's septic rating at the lot, from survey area PA065 (Jefferson County, Pennsylvania).

What can I build on 5 acres in Jefferson County?

Zoning in Jefferson County is set by the township, borough or city, or the county where the municipality has no zoning of its own (such as Punxsutawney, Brookville). The zoning district decides the uses, how many homes and the smallest lot it allows on 5 acres. ParcelSheet shows the lot size as mapped and the use code on the parcel record; the township or borough zoning office has the district and its rules. See the Jefferson County website.

What are the residential setbacks in Jefferson County (2026)?

Setbacks in Jefferson County come from the zoning code of the municipality the lot sits in: the front, side and rear distances depend on the lot's district. ParcelSheet does not draw setback lines or give a number it did not read; the township or borough zoning office gives them for the district. See the Jefferson County website.

Next to Jefferson County: Armstrong County, Clarion County, Clearfield County, Elk County, Forest County, Indiana County.

The Pennsylvania map · All Pennsylvania counties · Flood zones explained · FIRM panels and LOMAs · All 50 states