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Willis, TX ZIP codes

Willis, Texas has 2 ZIP codes. They are in Montgomery County.

Population in these ZIPs
38,421
Avg. median income
$82,700population-weighted
Typical home value
$290,200population-weighted
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ZIP codes within 10 miles

Willis, TX ZIP codes list

Willis, TX ZIP codes
ZIP codeCountyPopulationMedian incomeTypical home value
77318Montgomery County20,792$92,415$330,500
77378Montgomery County17,629$71,143$242,600

Population and median household income: ACS 2020–2024 5-year estimates. Typical home value: Zillow Home Value Index (September 2026) where available, otherwise the ACS median owner-reported value. "PO Box" marks ZIP codes with no delivery area of their own. Methodology

Cities near Willis

Frequently asked questions

What is the ZIP code for Willis, TX?

Willis, TX has 2 ZIP codes: 77318 and 77378.

What county is Willis, Texas in?

Willis ZIP codes are in Montgomery County.