Property Tax in Platte County, Missouri
Homeowners in Platte County, Missouri pay a median of $3,365 a year in real estate taxes, on a median home value of $317,600. Those are the Census Bureau's published medians for the county (US Census Bureau, American Community Survey (ACS) 5-year estimates, 2023) — the typical bill and the typical home value for owner-occupied households.
What the Platte County numbers mean
A median is the middle household: half of owner-occupied households in Platte County pay more than $3,365, and half pay less. Your own bill is set by your home's assessed value, the exemptions you qualify for, and the local taxing districts your property sits in — so individual bills vary widely around the median.
Dividing the median tax by the median home value gives a derived effective rate of 1.06% for Platte County. It is an estimate built from two survey medians, not the county's official rate, but it is a fair way to compare the local tax burden with other counties where home values are very different.
Platte County by the numbers
| Measure | Platte County | Missouri | United States |
|---|---|---|---|
| Median real estate taxes paid | $3,365 | $1,887 | $2,969 |
| Median home value | $317,600 | $215,600 | $303,400 |
| Derived effective rate* | 1.06% | 0.88% | 0.98% |
| Median tax per month | $280 | $157 | $247 |
*Estimate derived from Census medians (tax ÷ value), not an official rate.
Platte County at a glance
- Median tax rank in Missouri: #1 of 115 counties
- Median home value rank in Missouri: #1 of 115
- Population rank in Missouri: #11 of 115 (108,751 residents)
- Population density rank: #9 of 115 (259 people per square mile)
- Land area rank in Missouri: #105 of 115 (419 sq mi, 0.6% of the combined county land area)
- Median tax as a monthly figure: $280; per $1,000 of home value: $1.06
How Platte County compares
The median tax bill in Platte County is about 78% higher than the state median ($1,887 for Missouri) and about 13% higher than the US median ($2,969 nationally). By median taxes paid, the county ranks #1 out of 115 Missouri counties with published Census data — 0 counties in the state have a higher median bill.
Comparisons cut both ways: a county can have a modest rate but high bills because homes are expensive, or a high rate but modest bills because homes are cheaper. Platte County's derived rate of 1.06% sits above the derived US figure of 0.98%.
Some extra context for Platte County: the median bill works out to about $280 a month, and the derived rate equals roughly $1,060 of tax per $100,000 of home value. The county is home to 108,751 people — the #11 most populous county in Missouri, spread over 419 square miles, a density of about 259 people per square mile. Its median home value, $317,600, ranks #1 among the state's 115 counties with data.
Zooming out: of 3133 counties nationwide with published Census figures, only 348 record a higher median tax bill than Platte County — it sits in the top 11% nationally. The county holds roughly 1.8% of Missouri's people. Its homes are worth more than the state norm (median $317,600 versus $215,600), and a decade at the derived rate of 1.06% adds up to about 10.60% of the median home's value in tax. The cheapest county in the state, Reynolds County, medians $553 — $2,812 less than Platte County per year.
Counties nearest Platte County in the Missouri ranking
| County | Median tax paid | Median home value | Derived rate* |
|---|---|---|---|
| St. Charles County, MO | $3,340 | $296,800 | 1.12% |
| St. Louis County, MO | $3,193 | $260,700 | 1.23% |
Platte County and its population peers
Counties of a similar size can tax very differently. The table below shows the counties closest to Platte County in population across the United States, with their median bills and home values. Within the group of 9, Platte County ($3,365) ranks #2 of 9 by median tax paid.
| County | Population | Median tax paid | Median home value | Derived rate* |
|---|---|---|---|---|
| Miami County, OH | 109,549 | $2,106 | $209,200 | 1.01% |
| Cass County, MO | 109,393 | $2,364 | $269,000 | 0.88% |
| LaSalle County, IL | 109,049 | $3,336 | $154,900 | 2.15% |
| Eaton County, MI | 109,000 | $2,924 | $206,700 | 1.42% |
| Carver County, MN | 108,622 | $4,380 | $426,900 | 1.03% |
| Flathead County, MT | 108,445 | $2,867 | $467,700 | 0.61% |
| Yamhill County, OR | 108,122 | $3,318 | $442,700 | 0.75% |
| St. Lawrence County, NY | 107,796 | $2,735 | $119,800 | 2.28% |
The closest population match is Carver County, Minnesota (108,622 residents), where the median real estate tax paid is $4,380 on a median home value of $426,900 — $1,015 less than Platte County pays.
Platte County's nearest population neighbours within Missouri are Jasper County (123,532 residents, median tax $1,171 on a median value of $158,500); Cass County (109,393 residents, median tax $2,364 on a median value of $269,000); Franklin County (105,316 residents, median tax $1,774 on a median value of $214,900); Christian County (91,229 residents, median tax $1,878 on a median value of $249,700). Comparing them is a reminder that even inside one state's rules, the bill follows local home values and local district rates more than anything decided at the state level.
How the tax is worked out
The bill is built in stages. First the assessor puts a market value on the property. Exemptions — a homestead exemption above all — then reduce the taxable amount. Finally the combined local rate is applied. To see the scale: at the county's derived rate of 1.06%, each $100,000 of value corresponds to about $1,060 of tax a year, and a $400,000 home to roughly $4,240. Real bills use the official assessment and district rates, not this derived figure, so treat the example as a sense of scale only.
Illustrative bills in Platte County at the derived rate
The derived rate of 1.06% is only an estimate built from medians, but applying it to different home values gives a sense of scale for Platte County — and a quick way to compare with the state derived rate of 0.88% and the US figure of 0.98%:
| Home value | Illustrative tax / year | Per month |
|---|---|---|
| $150,000 | $1,590 | $132 |
| $250,000 | $2,650 | $221 |
| $350,000 | $3,710 | $309 |
| $500,000 | $5,300 | $442 |
| $750,000 | $7,950 | $662 |
Illustration only: real bills are computed from the assessed value, exemptions, and the combined rates of the property's actual taxing districts.
Checking your assessment in Platte County
Believe your assessment is too high? The practical order of attack is: obtain your record card and audit it line by line; collect comparable recent sales in Platte County; ask the assessor's office to correct anything plainly wrong; and, if the value still seems off, lodge a formal appeal ahead of the deadline printed on your assessment notice. Windows are short — often 30 to 90 days — and late appeals are usually rejected outright, however strong the case.
More Missouri counties
Frequently asked questions
What is the median property tax in Platte County, Missouri?
The median real estate tax paid in Platte County, Missouri is $3,365 per year, on a median home value of $317,600 (US Census Bureau, American Community Survey (ACS) 5-year estimates, 2023).
What is the effective property tax rate in Platte County, Missouri?
Dividing Platte County's median tax bill ($3,365) by its median home value ($317,600) gives a derived effective rate of 1.06%. This is an estimate computed from two Census survey medians — it is not the county's official tax rate.
How does Platte County compare with the rest of Missouri?
Platte County ranks #1 of 115 Missouri counties with published data by median taxes paid. Its median bill of $3,365 is about 78% higher than the Missouri median of $1,887.
How are property taxes calculated in Platte County, Missouri?
Three steps produce the bill: an assessment of market value by the local assessor, a reduction for exemptions you qualify for (a homestead exemption is the common one), and multiplication by the combined rates of the county, municipality, school district and any special districts covering the property. The median result in Platte County is $3,365 of tax on a $317,600 median home value.
Can I appeal my property tax assessment in Platte County, Missouri?
Yes. Request your property record card from the Platte County assessor's office and check it for errors, then compare your assessed value with recent sales of similar homes. If it still looks too high, file a formal appeal with the local review board named on your assessment notice before the deadline printed on the notice — windows are short, often 30 to 90 days.