Carter County, OK Property Tax: $1,185/yr (2026)
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The effective property tax rate in Carter County is 0.77% of assessed home value. On a home at the county median value of $153,500, that works out to about $1,182 per year, or $99 per month. Carter County is located in southern Oklahoma, and is home to approximately 48,255 residents.
About Carter County
Carter County covers approximately 822.3 square miles in Oklahoma. The county is home to about 48,255 residents living in roughly 21,619 housing units, of which 59.1% are owner-occupied. The median household income is $58,856, and the median home was built in 1977.
Carter County borders Garvin County, Jefferson County, Johnston County, Love County, Marshall County — useful comparisons if you're considering nearby areas with potentially different tax rates.
How Property Taxes Work in Oklahoma
Property taxes in Oklahoma are administered at the county level. Each county sets a millage rate applied to the assessed value of real property — the effective rate above accounts for any partial assessments and exemptions already built into the local tax base. Assessed value can differ meaningfully from current market value depending on how often the county reassesses and what fraction of market value it uses.
Most counties in Oklahoma offer exemptions that reduce the taxable assessed value: homestead exemptions for primary residences, senior exemptions, disability exemptions, and veteran exemptions are common. These reduce your effective rate below the county-wide average shown here. Contact the Carter County Assessor's office to learn which exemptions apply to your property and when to file.
Carter County vs. Neighboring Counties
| Location | Eff. Rate | Median Home | Annual Tax |
|---|---|---|---|
| Carter County, OK | 0.77% | $153,500 | $1,182 |
| Oklahoma state average | 0.65% | — | $998* |
| Garvin County | 0.57% | $132,600 | $750 |
| Jefferson County | 0.66% | $77,500 | $512 |
| Johnston County | 0.55% | $110,700 | $614 |
| Love County | 0.64% | $167,500 | $1,066 |
| Marshall County | 0.59% | $139,700 | $824 |
| US national average | 1.10% | $281,900 | $3,101 |
*State average annual tax computed at Carter County's median home value of $153,500. Source: US Census ACS 2023 5-year estimates.
Frequently Asked Questions
How does Carter County's property tax rate compare to the rest of Oklahoma?
At 0.77%, Carter County is higher than the Oklahoma state average of 0.65%. On a home at the county median of $153,500, that means about $1,182 per year — versus $998 at the state average rate, a difference of $184 per year. Compared to the national average of 1.10%, Carter County is below average.
What's a typical annual property tax bill in Carter County?
For a home at the county median value of $153,500, the annual property tax in Carter County is approximately $1,182 — or about $99 per month. For a home worth $230,250, expect around $1,773 per year. For a $307,000 home, approximately $2,364 per year. Use the calculator above to estimate taxes for any assessed value.
Where do I appeal a Carter County property tax assessment?
Property assessment appeals in Carter County are handled by the Carter County Assessor's office. Most jurisdictions require filing within 30–90 days of receiving your assessment notice — confirm the specific deadline with the assessor's office before submitting, as deadlines and procedures vary by county. A successful appeal can reduce your assessed value and lower your tax bill for the current and future tax years.
What exemptions are available in Carter County?
Oklahoma counties commonly offer homestead exemptions for owner-occupied primary residences, senior citizen exemptions for qualifying homeowners aged 65 and older, exemptions for disabled residents, and veterans' exemptions. Each exemption reduces your assessed taxable value, which in turn reduces your effective tax rate below the county-wide 0.77% shown here. Contact the Carter County Assessor's office to confirm which exemptions are available and the application deadlines.
Data sources: US Census Bureau ACS 2023 5-Year Estimates, US Census Gazetteer (2024), County Adjacency File