Miami County Population

1860–2026

36,679

2026 projection

7.2% since 2020 (increase)

010K20K30K40K186018801900192019401960198020002020

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 Miami County. Annual change is shown as a percentage. Growth is the total change since the preceding observation.
202636,679+4391.21%
202536,240+4391.23%
202435,801+4101.16%
202335,391+6331.82%
202234,758+1090.31%
202134,649+4251.24%
202034,224-200.06%
201934,244+5301.57%
201833,714+2640.79%
201733,450+4901.49%

Showing 10 of 31 years.

Miami County Demographics

41.7median age

Median age

Female41.7 yrs
Male41.8 yrs

Adults

26,710
6,323 seniors (65+) · 24% of adults20,387 other adults

Sex

Female 50% · 17,456Male 50% · 17,482

Population by age

MaleFemale85+ years, male: 21085+ years, female: 35080–84 years, male: 37080–84 years, female: 52075–79 years, male: 53575–79 years, female: 57770–74 years, male: 77870–74 years, female: 77765–69 years, male: 1,06665–69 years, female: 1,14060–64 years, male: 1,18360–64 years, female: 1,13955–59 years, male: 1,47755–59 years, female: 1,33850–54 years, male: 1,21450–54 years, female: 1,09545–49 years, male: 1,09445–49 years, female: 1,02340–44 years, male: 1,03640–44 years, female: 1,25935–39 years, male: 1,12635–39 years, female: 90930–34 years, male: 97730–34 years, female: 95025–29 years, male: 79425–29 years, female: 85420–24 years, male: 1,14520–24 years, female: 97615–19 years, male: 1,25315–19 years, female: 1,13510–14 years, male: 1,30610–14 years, female: 1,2635–9 years, male: 9605–9 years, female: 1,3060–4 years, male: 9580–4 years, female: 84585+80–8475–7970–7465–6960–6455–5950–5445–4940–4435–3930–3425–2920–2415–1910–145–90–45005001K1K

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 349 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

Miami County Income

$89,000median household income

Median household income

$89,000

Half of households earn more, half earn less

Median earnings

$57,852

Typical yearly pay for a worker 25 or older.

Poverty rate

7.9%

About 1 in 13 residents

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

Miami County Marital Status

57% of residents age 15 and older are married.

MarriedNever married
Overall
Male
Female
Marital status of residents age 15 and older
StatusOverallMaleFemale
Married57%58%57%
Never married24%27%21%
Divorced12%11%13%
Widowed6%3%8%
Separated<1%<1%1%

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