Niagara County Population

1810–2026

208.44K

2026 projection

1.7% since 2020 (decrease)

050K100K150K200K250K1850190019502000

Source: U.S. Census Bureau decennial counts and annual 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 Niagara County. Annual change is shown as a percentage. Growth is the total change since the preceding observation.
2026208,444-4680.22%
2025208,912-4680.22%
2024209,380-710.03%
2023209,451-9520.45%
2022210,403-1,3750.65%
2021211,778-3400.16%
2020212,118+2,5551.22%
2019209,563-7370.35%
2018210,300-6110.29%
2017210,911-6440.30%

Showing 10 of 36 years.

Niagara County Demographics

43.3median age

Median age

Female44.4 yrs
Male42 yrs

Adults

168,871
43,688 seniors (65+) · 26% of adults125,183 other adults

Sex

Female 50.8% · 107,118Male 49.2% · 103,603

Population by age

MaleFemale85+ years, male: 1,89085+ years, female: 3,33780–84 years, male: 1,85480–84 years, female: 3,02075–79 years, male: 3,39075–79 years, female: 3,74470–74 years, male: 5,75470–74 years, female: 6,33465–69 years, male: 7,11365–69 years, female: 7,25260–64 years, male: 7,80560–64 years, female: 8,56555–59 years, male: 7,85755–59 years, female: 7,90250–54 years, male: 6,78950–54 years, female: 6,75945–49 years, male: 5,76845–49 years, female: 5,93040–44 years, male: 5,91640–44 years, female: 6,29535–39 years, male: 6,72735–39 years, female: 6,49130–34 years, male: 6,80130–34 years, female: 6,73225–29 years, male: 6,27625–29 years, female: 6,09720–24 years, male: 6,05420–24 years, female: 5,78815–19 years, male: 6,18915–19 years, female: 6,01510–14 years, male: 5,81310–14 years, female: 5,9095–9 years, male: 6,2475–9 years, female: 5,8050–4 years, male: 5,3600–4 years, female: 5,14385+80–8475–7970–7465–6960–6455–5950–5445–4940–4435–3930–3425–2920–2415–1910–145–90–42K2K4K4K6K6K

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 2,107 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

Niagara County Income

$69,633median household income

Median household income

$69,633

Half of households earn more, half earn less

Median earnings

$50,051

Typical yearly pay for a worker 25 or older.

Poverty rate

13.5%

About 1 in 7 residents

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

Niagara County 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%49%45%
Never married33%37%30%
Divorced11%10%12%
Widowed7%4%10%
Separated2%1%2%

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

Sources

8 sources, all from the U.S. Census Bureau

Population

American Community Survey, 2024 5-year