Newton Population

1880–2026

18,286

2026 projection

1.7% since 2020 (decrease)

05K10K15K20K18801900192019401960198020002020

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 Newton. Annual change is shown as a percentage. Growth is the total change since the preceding observation.
202618,286-670.37%
202518,353+430.23%
202418,310-90.05%
202318,319-320.17%
202218,351-910.49%
202118,442-1600.86%
202018,602-910.49%
201918,693+830.45%
201818,610-700.37%
201718,680-2201.16%

Showing 10 of 30 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

Newton has a population change about the same as Harvey County, and lower than Kansas and the U.S.

  • United States+3.1%
  • Kansas+1.3%
  • Newton−1.2%
  • Harvey County−1.2%

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.

Newton Demographics

39.9median age

Median age

Female41.3 yrs
Male36.6 yrs

Adults

14,272
3,436 seniors (65+) · 24% of adults10,836 other adults

Sex

Female 48.6% · 8,943Male 51.4% · 9,454

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 184 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

Newton Income

$68,885median household income

Median household income

$68,885

Half of households earn more, half earn less

Median earnings

$42,379

Typical yearly pay for a worker 25 or older.

Poverty rate

9.7%

About 1 in 10 residents

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

Newton Marital Status

48% of residents age 15 and older are married.

MarriedNever married
Overall
Male
Female
Marital status of residents age 15 and older
StatusOverallMaleFemale
Married48%49%47%
Never married28%30%25%
Divorced15%15%15%
Widowed8%5%11%
Separated2%2%2%

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