Flooding & FEMA

Johnson County Flood Maps Were Updated in 2023

FEMA finalized new flood maps for Johnson County in 2023 — if you are buying property near a creek or river, check the current map before you close.

Johnson County Home & Property

FEMA flood maps show which areas face the highest risk of flooding. They also determine whether your mortgage lender requires flood insurance. Johnson County's maps became final in 2023, so older maps may not reflect current flood zones.

You can look up any address on FEMA's Flood Map Service Center at msc.fema.gov. Properties near the Nolan River, the Brazos River, or low-lying areas are most likely to be in a flood zone. Even if your property is outside the official flood zone, flooding can still happen — standard homeowner insurance does not cover floods.

Source to confirm: FEMA Flood Map Service Center

More Johnson County notes

Property Tax

Two Offices Handle Property Tax in Johnson County

Johnson County has a separate appraisal district and tax office — they do different jobs, so knowing which one to call saves you time.

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Property Tax

Homestead Exemption Can Lower Your Property Tax Bill

If your home in Johnson County is your main residence, you likely qualify for a homestead exemption that reduces the taxable value.

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Agricultural Appraisal

Ag Valuation Can Sharply Cut Taxes on Rural Land

If your rural land in Johnson County is actively used for farming or ranching, it may qualify to be taxed on its productivity value instead of market value — often a big difference.

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Vehicle Registration

Register Your Car at the Johnson County Tax Office

The Johnson County Tax Office handles vehicle titles and registration — the same office where you pay property taxes.

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