Ontario County Tax Assessor


Ontario Tax Assessor offices are responsible to carry out the mandate of New York in Ontario county. The law mandates that all real properties are subject to taxation unless exemption is imposed. Tax assessments are necessary in support to the required services to NY residents. Tax assessments go to services such as those provided for law enforcement, education, fire protection, parks and recreation, and many more.

The Ontario county directory portal for local tax assessor offices provides a comprehensive guide to the public. The site includes the name of the assigned tax assessor office for easy reference and related transaction.


Ontario Tax Assessor: Ontario County Real Property Tax Department

Tax Assessor Office Address: Ontario County Municipal Building, 20 Ontario St., Canandaigua, NY 14424

Phone: (585) 396-4382

Fax: (585) 393-2991

Website: http://www.co.ontario.ny.us/index.aspx?nid=96

Zip Code: 585 315

Office Hours: Eastern

Schedule an Appointment with Ontario County, New York Property Tax Assessor

The Ontario county, NY tax assessor office provides the necessary services to estimate the real property value within its jurisdiction. The property value is an essential component in computing the property tax bills. The Ontario tax assessor office is also tasked to provide supplemental bills, business property taxes, and other vital information for transparency.

Contact your Ontario tax assessor office for tax information and other related inquiries and concerns.