Throckmorton County, TX zoning map, flood zone and property lines by address

Towns in Throckmorton County: Throckmorton.

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 has 6 FIRM panels covering Throckmorton County, the newest effective February 2021; 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 Throckmorton 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 Texas statewide parcel layer (StratMap Land Parcels, Texas Geographic Information Office, from each county appraisal district), so a Throckmorton lot shows the same lines the appraisal district draws. Throckmorton County covers about 584,033 acres of land and 1,875 acres of water.

Mapped lines are approximate. The Throckmorton County appraisal district keeps the parcel record; every county's office is on the state's Comptroller county directory; a licensed surveyor sets the true corners.

Zoning

Texas counties cannot zone land. Under Texas Local Government Code chapter 211 only cities zone: in Throckmorton County, Throckmorton zones the land inside its limits. Land in Throckmorton County outside city limits has no zoning district; deed restrictions, the county's subdivision rules (Local Government Code chapter 232), the septic permit and the floodplain rules still apply.

So check city limits first. ParcelSheet shows the use the appraisal district lists for the lot and the town it sits in; the city planning office has the district for land inside a city. What you can build outside city limits in Texas.

ADU and guest houses

Outside city limits in Throckmorton County no county zoning limits a guest house or second home on a lot; deed restrictions and the septic permit, which must cover both homes, decide it. Inside a city, the city's zoning code sets 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. Throckmorton County is soil survey area TX447, Throckmorton County, Texas, last updated September 2026, on Web Soil Survey.

A new or changed septic system in Throckmorton County needs a permit from the Throckmorton County authorized agent of the TCEQ on-site sewage facility program, or the TCEQ region office where the county has none, which tests the soil on the lot itself.

Setbacks

Outside city limits in Throckmorton County there are no county zoning setbacks; deed restrictions and the county's subdivision rules can still set distances. Inside a city such as Throckmorton, the city's zoning code sets the front, side and rear setbacks for the lot's district. ParcelSheet does not draw setback lines.

Hazards that apply

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

Questions

Is my house in a flood zone in Throckmorton County?

Type the address in the box above and ParcelSheet reads FEMA's flood zone at the lot's center. FEMA has 6 flood map panels covering Throckmorton County, the newest effective February 2021. A lender or insurer uses the official FIRM panel; FEMA's Map Service Center has it.

How do I find property lines in Throckmorton County?

Open the Texas map, type the address, and the parcel outline from the Throckmorton County appraisal district 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 Throckmorton County?

Zoning in Throckmorton County is set only inside city limits, by each city (such as Throckmorton); Texas counties cannot zone, so land outside city limits has no zoning district. ParcelSheet shows the use code on the parcel record and names the municipality; the city planning office has the final word.

Can I build an ADU in Throckmorton County?

Outside city limits in Throckmorton County there is no county zoning, so no zoning rule limits a guest house; deed restrictions, the septic permit and the floodplain rules still apply. Inside a city, the city's zoning code under Texas Local Government Code chapter 211 sets the rule. ParcelSheet shows the lot size as mapped so you can see the room you have.

Do I need a septic permit in Throckmorton County?

Yes. A new or changed septic system in Throckmorton County needs a permit from the Throckmorton County authorized agent of the TCEQ on-site sewage facility program, or the TCEQ region office where the county has none. ParcelSheet shows the USDA soil survey's septic rating at the lot, from survey area TX447 (Throckmorton County, Texas).

What can I build on 5 acres in Throckmorton County?

Texas counties cannot zone land, so check city limits first. If the 5 acres are inside a city (such as Throckmorton), that city's zoning sets what can go on them; outside city limits there is no county zoning, and deed restrictions, the county's subdivision and septic rules and the floodplain rules still apply. See the Throckmorton County appraisal district.

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

Texas counties do not zone, so outside city limits there are no county zoning setbacks; deed restrictions and the county's subdivision rules can still set distances. Inside a city such as Throckmorton, the city's zoning code sets the front, side and rear setbacks for the lot's district. ParcelSheet does not draw setback lines. See the Throckmorton County appraisal district.

Next to Throckmorton County: Haskell County, Shackelford County, Stephens County, Young County.

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