Onondaga County, NY Property Tax: $4,805/yr (2026)
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The effective property tax rate in Onondaga County is 2.59% of assessed home value. On a home at the county median value of $185,300, that works out to about $4,799 per year, or $400 per month. Onondaga County is located in central New York, and is home to approximately 471,611 residents.
About Onondaga County
Onondaga County covers approximately 778.4 square miles in New York. The county is home to about 471,611 residents living in roughly 211,683 housing units, of which 60.5% are owner-occupied. The median household income is $74,740, and the median home was built in 1963.
Onondaga County borders Cayuga County, Cortland County, Madison County, Oswego County — useful comparisons if you're considering nearby areas with potentially different tax rates.
How Property Taxes Work in New York
Property taxes in New York 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 New York 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 Onondaga County Assessor's office to learn which exemptions apply to your property and when to file.
Onondaga County vs. Neighboring Counties
| Location | Eff. Rate | Median Home | Annual Tax |
|---|---|---|---|
| Onondaga County, NY | 2.59% | $185,300 | $4,799 |
| New York state average | 2.05% | — | $3,799* |
| Cayuga County | 2.28% | $164,200 | $3,747 |
| Cortland County | 2.65% | $158,100 | $4,184 |
| Madison County | 2.30% | $176,800 | $4,058 |
| Oswego County | 2.58% | $139,600 | $3,595 |
| US national average | 1.10% | $281,900 | $3,101 |
*State average annual tax computed at Onondaga County's median home value of $185,300. Source: US Census ACS 2023 5-year estimates.
Frequently Asked Questions
How does Onondaga County's property tax rate compare to the rest of New York?
At 2.59%, Onondaga County is higher than the New York state average of 2.05%. On a home at the county median of $185,300, that means about $4,799 per year — versus $3,799 at the state average rate, a difference of $1,000 per year. Compared to the national average of 1.10%, Onondaga County is above average.
What's a typical annual property tax bill in Onondaga County?
For a home at the county median value of $185,300, the annual property tax in Onondaga County is approximately $4,799 — or about $400 per month. For a home worth $277,950, expect around $7,199 per year. For a $370,600 home, approximately $9,599 per year. Use the calculator above to estimate taxes for any assessed value.
Where do I appeal a Onondaga County property tax assessment?
Property assessment appeals in Onondaga County are handled by the Onondaga 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 Onondaga County?
New York 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 2.59% shown here. Contact the Onondaga 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