Quincy Population

2010–2026

549

2026 projection

2.4% since 2020 (increase)

0200400600800201020122014201620182020202220242026

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 Quincy. Annual change is shown as a percentage. Growth is the total change since the preceding observation.
2026549+10.18%
2025548+20.37%
2024546+20.37%
2023544+10.18%
2022543+30.56%
2021540+40.75%
2020536-193.42%
2019555-91.60%
2018564-162.76%
2017580-142.36%

Showing 10 of 17 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

Quincy is growing faster than Logan County and Ohio, and slower than the U.S.

  • United States+3.1%
  • Quincy+1.5%
  • Ohio+0.9%
  • Logan County+0.4%

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.

Quincy Demographics

38.6median age

Median age

Female45.6 yrs
Male31.7 yrs

Adults

341
76 seniors (65+) · 22% of adults265 other adults

Sex

Female 43.7% · 205Male 56.3% · 264

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 5 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

Quincy Income

$59,141median household income

Median household income

$59,141

Half of households earn more, half earn less

Median earnings

$41,328

Typical yearly pay for a worker 25 or older.

Poverty rate

6.4%

About 1 in 16 residents

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

Quincy Marital Status

47% of residents age 15 and older are married.

MarriedNever married
Overall
Male
Female
Marital status of residents age 15 and older
StatusOverallMaleFemale
Married47%43%53%
Never married29%39%17%
Divorced18%14%22%
Widowed5%2%8%
Separated1%2%0%

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