Hamilton County GIS Maps

Hamilton County Maps

The maps below show a few of the county map styles included in our downloads. County packages include map exports in JPEG, PNG, SVG, PDF and GeoTIFF formats plus more than 20 GIS layers for mapping, research and analysis. Available layers include zip codes, area codes, subdivisions, school districts, political boundaries, roads, water features, points of interest and more.

County packages also include historical county demographics, business intelligence, analytical dashboards, AI-ready prompts, markdown files and related reference data. Everything is organized to save hours of manual work collecting current data, cleaning it and joining it together. That makes it easier to move faster on analytics, due diligence, business planning and location research. Paid packages are built for commercial use, but some package contents include source-specific attribution or notice guidance. Review Licensing & Data Source Notices.

Hamilton County Parcels

Hamilton County has 12,945 mapped parcels covering 1,166,559 acres. The median assessed value is $121,800. The median lot size is 6.14 acres. 4,199 parcels are 10 acres or larger. Of the parcels with a recorded build year, half were built in 1967 or earlier. The records carry 8,113 distinct owner names. About 17% of parcels list an owner mailing address outside New York. Owner names, assessed values and lot sizes are on nearly every parcel. Mailing addresses reach 79.5%. Site addresses reach 88.8%. Browse the interactive Hamilton County Parcel viewer here.

Hamilton County Parcel Data Coverage

Field coverage measured across all Hamilton County parcel records. Download free sample data here.

Hamilton County Population

Hamilton County had 5,107 residents in 2020. That was 5.6% higher than in 2010. Hamilton County had 272 fewer people in 2020 than it did in 2000, which points to a long-term population decline. Speculator is the largest city in the county, but it accounts for only about 8% of the total population. The county is fairly spread out, with about 3 people per square mile. Some of the county's most populated postal areas include Northville, Indian Lake and Caroga Lake.

Population Trend in Hamilton County NY

Hamilton County Population per 2000, 2010 and 2020 census counts with a baseline 2030 projection.

Hamilton County Zip Codes

Hamilton County has 13 zip codes. Some of the county's most populated zip codes include Northville (12134), Indian Lake (12842) and Caroga Lake (12032). Northville is the largest zip by population, with about 3,560 residents or 70% of the county total. Together, the three largest zips account for about 109% of all county residents based on 2020 population estimates.

Most Populated Zip Codes in Hamilton County NY

Hamilton County Zip Code populations and trends per most recent census data.

Hamilton County Demographics

Hamilton County has a median age of 57.2, which makes the county a little older than New York overall. About 13.1% of residents are under 18, while 32.8% are 65 or older. That gives the county a fairly even mix of younger families and older adults. The largest age group is 65 and over at about 32.8% of the population, which points to an older population profile. About 26.9% of adults have a bachelor's degree or higher, above the statewide figure of 39.6%. The county is mostly White by population, though Hispanic, Asian, Black and multiracial residents are also part of the local mix.

Key Demographics for Hamilton County NY

Hamilton County School Districts

Hamilton County is served by 9 public school districts with 1,314 students enrolled in 2024. The largest districts on the county map are Poland Central, Northville Central and Wells Central. Those three districts account for about 80% of public school enrollment in the map area. Total enrollment has stayed fairly steady in recent years, but it is slightly lower than it was in 2017.

Largest School Districts by Enrollment in Hamilton County NY

Hamilton County school district enrollment and trends per most recent NCES reporting data.

Hamilton County Housing & Real Estate

Hamilton County has a median home value of $242,000 and a median gross rent of $860. About 82% of occupied homes in the county are owner-occupied, so the local housing market leans heavily toward ownership. Home values run below the New York median, while rents come in below the state average. In March 2026, the median listing price was $416,500 and homes spent about 109 days on the market.

Businesses in Hamilton County, NY

Hamilton County has 755 business listings across 179 categories. The largest categories in Hamilton County business listings are Lake (101, 13.4%), Structure And Geography (50, 6.6%), and Mountain (46, 6.1%). The full Hamilton County business listings dataset includes names, categories, addresses and contact details where available. Hamilton County packages also include U.S. Census County Business Patterns data with establishment counts, employment and payroll by industry sector.

Top Business Categories in Hamilton County, NY

Hamilton County Business Listings

Hamilton County business listings sourced from Overture Maps. Includes locations with a high level of confidence.

Hamilton County Basemaps

Hamilton County map and data packages include a set of useful basemaps to help you get started quickly. These include a custom light grey canvas, USGS topo, imagery and other reference layers that make it easier to build clear, meaningful county maps using the included GIS layers, your own data or both. Pre-rendered map tiles for the light grey basemap are included so you can use them offline or host them on your own CDN.

Preview a Live Package Demo

See exactly what is included in a county data package. Inspect how files are organized, the interactive data explorer and how maps and analytics are laid out. The demo loads a real sample package from New York — explore the full structure before you buy.