Ontario County Online Resources (OnCor)
Ontario County welcomes you to explore the next generation OnCOR designed for both desktop/laptop users and mobile devices to address the interests and needs of Ontario County residents and visitors. We will continue to develop a gallery of special sites for you to learn about many aspects of this diverse area of the Finger Lakes region. Links are organized below, with Help Resources included on the right.
If you have any question or concerns, please contact the Ontario County GIS Program at 585-396-4482 or the GIS Coordinator.
The mapping information provided in these sites are a great starting point for research, but be aware these data are intended as a GENERAL REFERENCE and should never replace a site survey by a licensed professional or official documents. If you are uncertain how these data can be used, please contact the local community's staff for recommendations (e.g., Code Enforcement office). More information about the data used in these sites can be found here.
Anyone is welcome to use the apps, but if you would like to save your session as a Project, you will need to use the guest sign-in located in the top right corner of the app:
Username: guest Password: Guest!
OnCor Property App |
Interested in property? This app lets you explore tax parcels and associated information (local zoning, surveys, assessment, soils, owner history, with Pictometry, Google Street View, and Bing imagery). A user guide can be found here to help you get started. |
OnCOR "Light" Property App |
Want a simpler approach? This OnCOR "Light" app pares down the tools to help new (and even veteran) users dive in quickly without feeling overwhelmed by the full site. Over time, we may introduce a second tab in the toolbar for "advanced stuff" to bridge the gap in functionality. Stay tuned! |
The gallery of special sites shown below will continue to grow to help County and municipal staff. Coming in 2017 - DPW Site!
OnCOR Staff Property App |
Interested in property? This app lets you explore tax parcels and associated information (local zoning, surveys, assessment, soils, owner history, with Pictometry, Google Street View, and Bing imagery). |
Senior Meal Delivery App |
This Senior Meal Delivery App was designed for Office for the Aging staff to manage mapping data of seniors signed up for meal deliveries through the County. |
County Permit Management App |
This Permit Management App was designed for the County Code Enforcement Officer to administer permit projects. |
Anyone is welcome to use the apps, but if you would like to save your session as a Project, you will need to use the guest sign-in located in the top right corner of the app:
Username: guest Password: Guest!
Medical Resources App |
Looking for medical resources? The Medical Resources app provides information about health assets in the County. Data includes urgent care center (national layer), hospitals, medical providers, |
Planning Exploratory App |
Interested in developing a property? This in-depth Planning Board app will help you determine what features may be impacted (e.g., wetlands, farmland, historic sites, etc.) and how aspects of the property may limit what can be done. |
Explore App |
Explore Ontario County! From beautiful lakes, summits, and waterfalls to wine tours, Native American heritage and winter fun, there's something year-round for everyone. |
Community Services App |
Need local resources? The Community Services app will help you find them, whether it be daycare, affordable housing, food sites (grocery stores, farmers markers, pantries), and other locations. |
Historic Barns App |
Love Farming & History? Come learn about agricultural history through a tour of historic barns! A full inventory began in the Town of Canandaigua, gradually expanding to canvass the remaining communities. |
OnCOR App Guide
- PDF with how-to instructions and screen shotsOnCOR Feedback Form -
Problems, suggestions, wish lists!Planning Board App Exploratory Guide - Learn how to use the Exploratory option of the Planning Board application
If you have any questions please feel free to contact the County's GIS Coordinator by email or phone (585-396-4482).
HELP VIDEOS:
- Getting Started Overview Demo (4:20 minutes / 59 MB)
- Parcel Search Tools Demo (1:50 minutes / 26 MB)
- Distance and Area Tools Demo (2:09 minutes / 43 MB)
- Plot Coordinates Tool Demo (1:45 minutes / 33 MB)
- Adding Graphics and Text Demo (4:19 minutes / 90 MB)
- Upload Data Tool Demo (1:26 minutes / 14 MB)
- Comparable Tool Demo (1:02 minutes / 23 MB)
- Find Survey Maps Tool Demo (1:00 minute / 14 MB)
- View Historic Images Tool Demo (36 seconds / 8 MB)
- Pictometry and Google Tool Demo (3:23 minutes / 68 MB)
- Labeling Demo (3.21 minutes / 51 MB)
- Layer Symbology Demo (5:14 minutes / 64 MB)
OnCor is a cooperative project between the Ontario County Real Property Tax Services, Information Services/GIS Program, Planning Department, Clerks Office, Office for the Aging, and County Public Works. The program leverages the resources of these individual departments and delivers them through one common web enabled interface.
Please note that tax bills are now provided where available, but these are for informational purposes only and are not intended to replace official documents. While assessment information is also shown, users are strongly urged to contact the Ontario County Treasurer's Office (585-396-4432) to verify exact total taxes. If the property is located in the City of Canandaigua or Geneva, please contact the city that the property is located in: City of Canandaigua (585-396-5015), City of Geneva (315-789-2114). Ontario County school tax bills for properties outside of Ontario County are not posted to the county website. Current year School tax bills for Ontario County properties attending Wayne County schools are now posted to ONCOR as of yet. If you have tax questions, please call the respective school district (Lyons: 315-946-2200; Newark: 315-332-3230; Palmyra-Macedon: 315-597-3400).
You can view tax bills and payments here: https://www.co.ontario.ny.us/1759/Tax-Bills-and-Payments
The County also has an application to actually view the bills and payments: https://ny.ontariocounty.totalcollectionsolution.com/site/login
Contact Us
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70 Ontario Street
Canandaigua, NY 14424
Ph: (585) 396-4500
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