When are property taxes due in Platte County, WY?

First half November 11, 2026; Second half May 11, 2027. This is the Wyoming statutory schedule; confirm with the county.

How do I pay Platte County property tax?

Through the county website, plattecountywyoming.com, or by post or in person at the treasurer's office.

How much is property tax on a $400,000 house in Platte County, WY?

About $2,264 a year, or $189 a month, at this county's effective rate of 0.57%. The rate is the county's median owner-occupied tax bill divided by the typical home value at the time; an exemption the seller holds usually does not transfer.

Platte County property tax due dates

Platte County, WY follows the Wyoming statutory schedule. This page shows that schedule, the county's own website, and the late penalty — the county can still set its own dates, so confirm before you pay.

Ad slot · topreserved

…until first half — November 11, 2026

Instalment	Due date	Notes
First half	November 11, 2026	First half is payable November 10; paying the entire year by December 31 avoids all interest and penalty.
Second half	May 11, 2027	Second half is payable May 10 of the following year.

Platte County website →

Schedule: wyoleg.gov · Wyoming statute · not yet county-verified

Ad slot · in-contentreserved

Statewide schedule — read this before you rely on it

Counties follow the same statutory payment and delinquency dates. Most counties in this state follow these dates.

Unpaid amounts bear 18% annual interest from the date they are payable, and taxes still unpaid on May 11 are certified as delinquent.

Assessors deliver the tax roll to the treasurer by the third Monday in August, and notices go out before the November 10 first-half date.

Platte County at a glance

Population: 8,546 (Census estimate, 2023) — the 18th largest of 23 Wyoming counties and county equivalents.
Typical tax bill: $1,391 a year (median for owner-occupied homes, ACS 2022 5-year estimate) — the Wyoming median is $1,567.
Land area: 2,081.5 sq mi, about 4.1 people per sq mi.
County government: plattecountywyoming.com.

What would the tax be on a house I buy here?

On a $400,000 purchase in Platte County, WY, property tax comes to about $2,264 a year — roughly $189 a month — at this county's effective rate of 0.57%.

Your purchase price

Effective rate 0.57% = this county's median owner-occupied tax bill ($1,391, ACS 2022 5-year estimate) divided by the typical home value at the time ($245,593, Zillow, 2022-12-31). Exemptions the seller holds — homestead, senior, veteran — usually do not transfer with the deed, so a new purchase can run above this figure. The county assessor sets the assessed value; this is an estimate, not a quote.

How to pay Platte County property tax

County website: plattecountywyoming.com — start here for the treasurer or tax collector page.
By post: mail to the county treasurer; the postmark usually counts, not the arrival date.
In person: the treasurer's office, with your bill or parcel number.
Escrow: if your mortgage escrows taxes, the servicer pays — you still owe any shortfall.

Is this county verified?

Not yet. Platte County is on the queue: we publish a county's own published dates once they have been checked against the county website. Ask for it and it moves up. Until then, the Wyoming statutory schedule above is the reliable starting point.

Larger Wyoming counties nearby

More in Wyoming

See all Wyoming counties, or every upcoming deadline we track. If the bill is already a problem, read what happens if you don't pay and how to appeal an assessment.

Ad slot · responsivereserved — add your AdSense ID in ads.js

CountyTaxDates is an independent reference and is not a government agency. Deadlines change and exceptions apply — always confirm with your county treasurer using the official link on this page. Nothing here is tax, legal or financial advice.