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Buying land in Hays County, Texas: what to check

Hays County covers 677 square miles of land and 2 of water in Texas, with about 292,029 residents in 2024 (up 21.1% since 2020). The 2020 Census counted 91% of its land as rural and 70% of residents as living in urban areas. Farms operate 33% of the county's land. Below: how much of Hays County floods, what its soils allow, what farmland is worth and how often it's in drought, from free public data with every source linked.

Check a location in Hays CountySee a sample report

Hays County at a glance

In the 100-year floodplain

10%

Above the state's county median (2.4%)

FEMA National Risk Index

Hydric (wetland-type) soils

0%

Below the state's county median (under 1%)

USDA NRCS Web Soil Survey (SSURGO)

Soils very limited for septic

98%

USDA NRCS Web Soil Survey (SSURGO)

Farm land value, 2022

$11,177/acre

Above the state's county median ($2,782)

USDA NASS, 2022 Census of Agriculture

Weeks in severe drought

65%

Share of weekly maps, 2021–2026

U.S. Drought Monitor county statistics

Land classed rural

91%

Census 2020 Census urban and rural classification

What to check before buying land in Hays County

Ordered by what Hays County's numbers point to. Every parcel differs, so treat this as where to look first.

  1. 1.Budget for a perc test and maybe an engineered septic

    USDA rates 98% of Hays County's mapped soils "very limited" for conventional septic absorption fields and 0% "not limited".

    Without city sewer you need a septic permit from the county or state health department. Make the offer contingent on a passing soil or perc test; mound and aerobic systems can cost several times a conventional one.

    Guide: Perc tests and septic systems

  2. 2.Prove the water supply before you buy

    At least half of Hays County was in severe drought (D2) or worse in 65% of the 262 weekly U.S. Drought Monitor maps from 2021 to 2026. Texas allocates water by permit or water right, so a well or pond isn't automatic.

    Ask whether the land has a public water connection, an existing well (and its log and yield), or neighbors' well depths from the state well database. For a new well, check permits and typical depth with the state agency first.

    Guide: Wells, public water and water rights

  3. 3.Confirm the flood zone at your exact spot

    10% of the county's area is in the 1%-annual-chance (100-year) floodplain FEMA's National Risk Index uses for inland flooding; 1.5% of its mapped soils flood occasionally or frequently.

    Even where little of the county floods, creeks and low spots do. Check the FEMA zone at the building site and the driveway route.

    Guide: Flood zones before buying land

  4. 4.Confirm legal road access and power

    The 2020 Census classified 91% of Hays County's land area as rural.

    Rural tracts are often sold without recorded access or a power line nearby. Get the title company to confirm a recorded easement or public road frontage, and ask the electric co-op what a line extension costs.

    Guide: Road access and landlocked land

  5. 5.Check slope at the building site

    18% of Hays County's mapped soils have an average slope over 15% (USDA SSURGO).

    Steep ground means grading, retaining walls, longer driveways and erosion control. Compare the slope at the house site and along the access route, not just the parcel average.

    Guide: Terrain and slope

  6. 6.Sanity-check the price per acre

    Farm real estate in Hays County averaged $11,177 an acre including buildings in the 2022 Census of Agriculture, and 17% of its mapped soils are prime or of statewide importance.

    Compare the asking price with recent sales of similar tracts, not the county average, which mixes cropland, pasture, timber and homesites. If an ag tax valuation applies, ask what the rollback taxes would be if you change the use.

    Guide: Land due diligence checklist

Flood zones, wetlands and water in Hays County

Area in the 1%-annual-chance (100-year) floodplain
10%, 45th highest of 254 in Texas FEMA National Risk Index
Mapped soils that flood occasionally or frequently
1.5% USDA NRCS Web Soil Survey (SSURGO)
Hydric soils (a federal wetland indicator)
0% USDA NRCS Web Soil Survey (SSURGO)
Poorly or very poorly drained soils
0% USDA NRCS Web Soil Survey (SSURGO)
Surface water (lakes, rivers, reservoirs)
2 sq mi Census 2024 Gazetteer Files
Drought on 2026-10-27
100% moderate or worse, 85% severe or worse U.S. Drought Monitor county statistics

The floodplain share is the area FEMA's National Risk Index counts as exposed to inland flooding, mostly mapped 100-year flood zones. It says how common flood-prone land is in Hays County, not whether a given parcel floods. For that, look up the zone at your exact point on the FEMA Flood Map Service Center or run the free check.

Soils and terrain

Prime farmland
12% USDA NRCS Web Soil Survey (SSURGO)
Farmland of statewide importance
5% USDA NRCS Web Soil Survey (SSURGO)
Average slope over 15%
18% USDA NRCS Web Soil Survey (SSURGO)
Very limited for septic absorption fields
98% USDA NRCS Web Soil Survey (SSURGO)
Not limited for septic absorption fields
0% USDA NRCS Web Soil Survey (SSURGO)

Shares of Hays County's soil-surveyed land (about 362,719 acres, open water excluded), using each map unit's dominant condition in USDA's SSURGO soil survey. Soils change within a few hundred feet, so the soil at your building site is what matters.

Farms and land use

Farms (2022)
940 USDA NASS, 2022 Census of Agriculture
Share of the county's land in farms
33% USDA NASS, 2022 Census of Agriculture
Average farm size
152 acres (median 29) USDA NASS, 2022 Census of Agriculture
Average value of land and buildings
$11,177 per acre, 5th highest of 254 in Texas USDA NASS, 2022 Census of Agriculture
Cropland
11,350 acres USDA NASS, 2022 Census of Agriculture
Pasture and rangeland
120,127 acres USDA NASS, 2022 Census of Agriculture
Woodland on farms
19,462 acres USDA NASS, 2022 Census of Agriculture
Irrigated land
606 acres USDA NASS, 2022 Census of Agriculture

Natural hazard ratings

FEMA's National Risk Index rates each hazard for Hays County relative to every other U.S. county. Overall risk: Relatively Moderate.

  • HailRelatively High
  • LightningRelatively High
  • Strong windRelatively High
  • TornadoRelatively High
  • Winter weatherRelatively High
  • DroughtRelatively Moderate
  • Heat waveRelatively Moderate
  • River and inland floodingRelatively Moderate
  • HurricaneRelatively Low
  • WildfireRelatively Low
  • EarthquakeVery Low
  • LandslideVery Low

FEMA National Risk Index, December 2025

Questions about buying land in Hays County

How much of Hays County, TX is in a flood zone?

About 10% of Hays County's area is in the 1%-annual-chance (100-year) floodplain used by FEMA's National Risk Index (December 2025), 45th highest of 254 counties in Texas. Whether a given parcel is in a flood zone depends on its exact location, so check the FEMA map at your pin.

How much does land cost per acre in Hays County?

The 2022 Census of Agriculture put the average value of farm land and buildings in Hays County at $11,177 an acre, 5th highest of 254 counties in Texas (the median Texas county was $2,782). It's a self-reported average across farms, so small homesites and recreational tracts often sell for more per acre.

Will a septic system work on land in Hays County?

Often, but test first. USDA soil surveys rate 98% of Hays County's mapped soils very limited for conventional septic absorption fields, usually because of wetness, slow permeability, shallow rock or flooding. A perc or soil test on the parcel decides what system the health department will permit.

Is there good farmland in Hays County?

12% of Hays County's mapped soils are prime farmland, 0% are prime only if drained, irrigated or protected from flooding, and 5% are farmland of statewide importance (USDA SSURGO). The 2022 Census of Agriculture counted 940 farms averaging 152 acres.

How often is Hays County in drought?

Since 2021, at least half of the county was in severe drought or worse in 65% of weekly U.S. Drought Monitor maps, and in extreme drought in 47%. On 2026-10-27, 100% of the county was in moderate drought or worse.

Can I check a specific property in Hays County?

Yes. Enter the address or drop a pin anywhere in Hays County on the free check. It shows which checks return data at that exact point, and the full report costs $29: flood zone, slope, soils, wetlands, roads, power lines, wildfire and more, each with its source. It is a screen of public maps, not a survey, title search or perc test.

Check the parcel, not just the county

County numbers tell you what to look for. The free check looks at your exact point in Hays County: flood zone, slope, soils, wetlands, roads, power and more. The full report is $29.

Check a location in Hays County

What these numbers can't tell you

  • County shares describe Hays County as a whole; a parcel can be entirely in or out of a flood zone, wetland or poor soil.
  • It doesn't look at the whole parcel, its boundaries, title, easements, zoning or permits.
  • It isn't a survey, appraisal, elevation certificate, soil or perc test, or Phase I environmental site assessment.
  • It can't see local distribution power lines, driveways, legal access, wells or mineral rights.
  • Maps lag behind the ground, and distances are straight-line, not driving distance.

Sources and vintages

Summarized per county by our build script on 2026-10-31. County figures cover the whole county; checks on the report are at your point.