Tompkins County NY Information


Tompkins County Subdivisions

Tompkins County NY Data & Demographics (As of July 1, 2021)


Total Population 104,590 (100%)
Population in Households 91,605 (87.6%)
Population in Families 57,986 (55.4%)
Population in Group Quarters1 12,985 (12.4%)
Population Density 220
Diversity Index2 42


Median Household Income $56,663
Average Household Income $87,453
% of Income for Mortgage4 17%
Per Capita Income $34,400
Wealth Index5 88


Total HU (Housing Units) 44,297 (100%)
Owner Occupied HU 20,555 (46.4%)
Renter Occupied HU 20,224 (45.7%)
Vacant Housing Units 3,518 ( 7.9%)
Median Home Value $232,949
Average Home Value $309,453
Housing Affordability Index3 101


Total Households 40,779
Average Household Size 2.25
Family Households 20,419
Average Family Size 3
  1. Group Quarters - a place where people live or stay in a group living arrangement. Includes college residents halls, nursing facilities, military barracks, and correctional facilities.
  2. The Diversity Index is a scale of 0 to 100 that represents the likelihood that two persons, chosen at random from the same area, belong to different races or ethnic groups. If an area's entire population belongs to one race AND one ethnic group, then the area has zero diversity. An area's diversity index increases to 100 when the population is evenly divided into two or more race/ethnic groups.
  3. The Housing Affordability Index base is 100 and represents a balance point where a resident with a median household income can normally qualify to purchase a median price home. Values above 100 indicate increased affordability, while values below 100 indicate decreased affordability.
  4. The % of Income for Mortgage quantifies the percentage of median household income dedicated to mortgage payments on a home priced at the median value (assuming a 30-year mortgage and a 20% down payment).
  5. The Wealth Index is based on a number of indicators of affluence including average household income and average net worth, but it also includes the value of material possessions and resources. It represents the wealth of the area relative to the national level. Values above or below 100 represent above-average wealth or below-average wealth compared to the national level.


2010-2021 2021-2026
Population 0.26% 0.33%
Households 0.4% 0.43%
Families 0.17% 0.29%
Median Household Income   2.01%
Per Capita Income   2.77%
Owner Occupied HU   0.8%


Tompkins County NY - Peer Comparisons by Rank and Percentile

The table below compares Tompkins County to the other 62 counties and county equivalents in New York by rank and percentile using July 1, 2021 data. The location Ranked # 1 has the highest value. A location that ranks higher than 75% of its peers would be in the 75th percentile of the peer group.

Variable Description Rank Percentile
Total Population # 28 56th
Population Density # 22 66th
Median Household Income # 40 37th
Housing Affordability Index # 10 16th
Per Capita Income # 21 68th
Diversity Index # 21 68th

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