Ithaca Population

1870–2026

33,978

2026 projection

5.8% since 2020 (increase)

05K10K15K20K25K30K35K18801900192019401960198020002020

Source: U.S. Census Bureau decennial counts and annual estimates, including 2010–2020 intercensal estimates. 2026 is a projection. Values between recorded years are interpolated.

Use the left and right arrow keys to inspect population observations.

Population by year

Population estimates for Ithaca. Annual change is shown as a percentage. Growth is the total change since the preceding observation.
202633,978+3461.03%
202533,632+1430.43%
202433,489+780.23%
202333,411+7572.32%
202232,654+2,1236.95%
202130,531-1,5774.91%
202032,108+2180.68%
201931,890+2800.89%
201831,610+570.18%
201731,553+4831.55%

Showing 10 of 31 years.

The 2020 row compares the April 1 Census count with the July 1, 2019 estimate (about nine months). Its Growth and Annual change therefore do not represent a full year.

Growth since 2020, compared

Ithaca is growing faster than Tompkins County, New York, and the U.S.

  • Ithaca+4.8%
  • United States+3.1%
  • New York−0.6%
  • Tompkins County−1.4%

Change from July 1, 2020 to July 1, 2025 population estimates—not annualized growth or site projections.

Source: U.S. Census Bureau. U.S. totals are summed from the 50 states and D.C.; unavailable comparisons are omitted.

Ithaca Demographics

23.3median age

Median age

Female22.9 yrs
Male23.7 yrs

Adults

30,485
3,318 seniors (65+) · 11% of adults27,167 other adults

Sex

Female 49.6% · 16,288Male 50.4% · 16,526

Population by age

MaleFemale85+ years, male: 10985+ years, female: 19180–84 years, male: 21480–84 years, female: 24475–79 years, male: 34375–79 years, female: 34970–74 years, male: 36370–74 years, female: 39765–69 years, male: 63265–69 years, female: 47660–64 years, male: 42060–64 years, female: 86155–59 years, male: 52655–59 years, female: 47650–54 years, male: 53050–54 years, female: 44445–49 years, male: 53345–49 years, female: 50140–44 years, male: 82440–44 years, female: 87135–39 years, male: 88235–39 years, female: 75730–34 years, male: 81030–34 years, female: 77525–29 years, male: 1,31925–29 years, female: 1,19020–24 years, male: 5,33320–24 years, female: 4,15615–19 years, male: 2,91415–19 years, female: 3,44310–14 years, male: 24710–14 years, female: 3565–9 years, male: 3315–9 years, female: 5500–4 years, male: 1960–4 years, female: 25185+80–8475–7970–7465–6960–6455–5950–5445–4940–4435–3930–3425–2920–2415–1910–145–90–42K2K4K4K

Hover or tap an age group to see exact counts. Use the up and down arrow keys to inspect age groups.

U.S. Census Bureau, 2024 ACS 5-year estimates · Table S0101

Race and ethnicity

Tap a square or a group below to highlight it.

Each square is about 1% of residents (roughly 328 people).

Hispanic or Latino residents can be of any race. All other groups exclude Hispanic residents.

U.S. Census Bureau, 2024 ACS 5-year estimates · Table B03002

Ithaca Income

$48,784median household income

Median household income

$48,784

Half of households earn more, half earn less

Median earnings

$46,196

Typical yearly pay for a worker 25 or older.

Poverty rate

30.4%

About 1 in 3 residents

U.S. Census Bureau, 2024 ACS 5-year estimates · Tables S1901, S1501, S1701

Ithaca Marital Status

22% of residents age 15 and older are married.

MarriedNever married
Overall
Male
Female
Marital status of residents age 15 and older
StatusOverallMaleFemale
Married22%22%23%
Never married70%73%66%
Divorced5%4%5%
Widowed2%<1%4%
Separated1%1%1%

U.S. Census Bureau, 2024 ACS 5-year estimates · Table S1201

Sources

14 sources

Population

American Community Survey, 2024 5-year

Additional sources