Demographics of Osage County, Missouri

Osage County, Missouri had 13,611 people on July 1, 2025, by the Census Bureau’s estimate: +361 since July 2020. Age, income, poverty, housing and origin below come from the American Community Survey, averaged over 2020–2024, each with its margin of error.

Osage County, in four figures

13,611
Population: July 1, 2025, Vintage 2025 estimate.; +2.7%
Change since July 2020: +361 people.; 41.1 ±0.7
Median age: ACS 2020–⁠2024.; $76,681 ±$5,883
Median household income: ACS 2020–⁠2024, in 2024 dollars.

Population, year by year

July 1 estimates from the Census Bureau’s Vintage 2025. Each year's change is births less deaths, net moves from abroad and net moves from elsewhere in the country, with the Bureau's small residual. The 2020 row's components run 3 months, from the April census to July 1.

Osage County, Missouri's population grew 2.7% from July 2020 to July 2025, against +3.1% nationally

The July 1 estimate of Osage County, Missouri's resident population and the nation's, each year of the Census Bureau's Vintage 2025, as a share of its July 2020 level (= 100).

U.S. Census Bureau — Census Bureau population estimates — counties and Puerto Rico municipios, with components of change

About this chart

The figures

Osage County, Missouri's population grew 2.7% from July 2020 to July 2025, against +3.1% nationally. The July 1 estimate of Osage County, Missouri's resident population and the nation's, each year of the Census Bureau's Vintage 2025, as a share of its July 2020 level (= 100).
July 1	Population	Index	United States
2020	13,250	100.0	100.0
2021	13,392	101.1	100.2
2022	13,389	101.0	100.7
2023	13,462	101.6	101.6
2024	13,469	101.7	102.5
2025	13,611	102.7	103.1

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Population of Osage County, Missouri on July 1 of each year, Vintage 2025
July 1	Population	Change	Births less deaths	From abroad	From elsewhere in the country
2020	13,250	−14	+3	0	−19
2021	13,392	+142	−14	0	+151
2022	13,389	−3	+2	0	+6
2023	13,462	+73	+20	−2	+58
2024	13,469	+7	+33	+4	−28
2025	13,611	+142	+27	+3	+113

Age, 2020–2024

The median age is 41.1 ±0.7: for men 41.2 ±1.0 and for women 41.0 ±0.9. Shares are of everyone the survey counts, in the Bureau’s sex-by-age table (B01001).

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People in Osage County by age, ACS 2020–2024
Age	People	Share	Missouri	United States
Under 5	747 ±16	5.6% ±0.1	5.8% ±<0.1	5.6% ±<0.1
5 to 17	2,296 ±143	17.1% ±1.1	16.6% ±0.1	16.3% ±<0.1
18 to 24	1,298 ±151	9.7% ±1.1	9.1% ±0.1	9.1% ±<0.1
25 to 44	3,046 ±156	22.7% ±1.2	26.0% ±0.1	26.9% ±<0.1
45 to 64	3,566 ±195	26.6% ±1.5	24.6% ±0.1	24.8% ±<0.1
65 and over	2,449 ±228	18.3% ±1.7	17.9% ±0.1	17.2% ±<0.1

Income and poverty, 2020–2024

Median household income is $76,681 ±$5,883, and income per person $41,168 ±$7,377, in 2024 dollars. The median is $70,702 ±$325 in Missouri and $80,734 ±$166 in the United States.

Households by income

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Households in Osage County by income, ACS 2020–2024
Household income	Households	Share	Missouri	United States
Under $25,000	943 ±165	17.8% ±3.1	15.8% ±0.2	14.6% ±<0.1
$25,000 to $49,999	914 ±184	17.3% ±3.4	19.6% ±0.2	16.7% ±<0.1
$50,000 to $74,999	728 ±132	13.8% ±2.5	17.4% ±0.2	15.5% ±<0.1
$75,000 to $99,999	735 ±140	13.9% ±2.6	13.2% ±0.2	12.6% ±<0.1
$100,000 to $149,999	1,043 ±165	19.7% ±3.0	17.1% ±0.2	17.5% ±<0.1
$150,000 to $199,999	595 ±152	11.3% ±2.8	8.2% ±0.1	9.6% ±<0.1
$200,000 or more	329 ±129	6.2% ±2.4	8.7% ±0.1	13.4% ±0.1

Poverty by age

The poverty rate is the share of people whose family income is below the federal threshold for their family’s size, of everyone for whom the Bureau determines it (B17020).

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Poverty rate in Osage County by age, ACS 2020–2024
Age	Below poverty	Rate	Missouri	United States
All ages	1,127 ±215	8.6% ±1.6	12.6% ±0.2	12.5% ±0.1
Under 18	211 ±73	7.1% ±2.4	15.8% ±0.4	16.1% ±0.1
18 to 59	680 ±139	10.0% ±2.0	12.0% ±0.2	11.6% ±0.1
60 and over	236 ±69	7.2% ±2.1	10.9% ±0.2	11.0% ±<0.1

Housing, 2020–2024

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Housing in Osage County, ACS 2020–2024
Measure	Osage County	Missouri	United States
Housing units	6,501 ±27	2,825,287 ±1,043	143,775,355 ±10,234
Occupied	81.3% ±2.9	88.8% ±0.2	89.9% ±0.1
Vacant	18.7% ±3.0	11.2% ±0.2	10.1% ±0.1
Owner occupied	79.4% ±2.4	68.1% ±0.3	65.2% ±0.3
Renter occupied	20.6% ±2.6	31.9% ±0.2	34.8% ±0.1
Median home value	$223,300 ±$16,356	$230,300 ±$880	$332,700 ±$236
Median gross rent	$639 ±$77	$1,033 ±$6	$1,413 ±$2
Median year built	1982 ±3	1978 ±1	1980 ±1

Occupied and vacant are shares of all housing units; owner and renter occupied are shares of occupied units. Value and rent are medians in 2024 dollars.

Origin and place of birth, 2020–2024

Hispanic or Latino origin is not a race in the Census Bureau’s tables. Here the people of Hispanic origin, of any race, are one row, and everyone else is counted by race alone (B03002), so the rows add to the whole.

Hispanic origin and race

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People in Osage County by Hispanic origin and race, ACS 2020–2024
Origin	People	Share	Missouri	United States
Hispanic or Latino	149 ±0	1.1% ±<0.1	5.2% ±<0.1	19.3% ±<0.1
White alone, not Hispanic	12,942 ±43	96.6% ±0.3	76.3% ±0.1	57.4% ±<0.1
Black alone, not Hispanic	0 to 76	0% to 0.6%	10.9% ±0.1	11.9% ±<0.1
Asian alone, not Hispanic	0 to 33	0% to 0.2%	2.1% ±<0.1	5.9% ±<0.1
American Indian and Alaska Native alone, not Hispanic	1 to 33	< 0.1% to 0.2%	0.2% ±<0.1	0.5% ±<0.1
Native Hawaiian and Other Pacific Islander alone, not Hispanic	0 to 19	0% to 0.1%	0.1% ±<0.1	0.2% ±<0.1
Some other race alone, not Hispanic	0 to 19	0% to 0.1%	0.4% ±<0.1	0.6% ±<0.1
Two or more races, not Hispanic	247 ±64	1.8% ±0.5	4.8% ±0.1	4.3% ±<0.1

A range (the estimate less and plus its margin) where the Bureau's estimate is too uncertain to state as one number: a coefficient of variation over 30%.

Place of birth and citizenship

“Born a citizen outside the states” counts people born in Puerto Rico, the island areas, or abroad to American parents. Naturalized citizens and those who are not citizens together make up the people born abroad (B05002).

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People in Osage County by place of birth and citizenship, ACS 2020–2024
Born	People	Share	Missouri	United States
Born in the state	11,814 ±261	88.2% ±1.9	65.6% ±0.2	57.3% ±<0.1
Born in another state	1,530 ±254	11.4% ±1.9	29.1% ±0.1	26.9% ±<0.1
Born a citizen outside the states	1 to 25	< 0.1% to 0.2%	0.8% ±<0.1	1.7% ±<0.1
Born abroad	9 to 81	0.1% to 0.6%	4.5% ±0.1	14.1% ±<0.1
Naturalized citizens	0 to 62	0% to 0.5%	2.3% ±0.1	7.4% ±<0.1
Not citizens	0 to 31	0% to 0.2%	2.2% ±0.1	6.8% ±<0.1

A range (the estimate less and plus its margin) where the Bureau's estimate is too uncertain to state as one number: a coefficient of variation over 30%.

Osage County among the counties of Missouri

73rd of 115 by population, July 2025. Every one is listed on the Missouri page.

Counties of Missouri near Osage County in population, July 2025
County	July 2025	Change since 2020
Cedar County	14,888	+4.8%
Gasconade County	14,784	+0.1%
Livingston County	14,708	+1.1%
Dent County	14,584	+1.3%
Pemiscot County	14,465	−7.2%
Osage County	13,611	+2.7%
Madison County	12,858	+1.9%
Douglas County	12,342	+6.4%
Mississippi County	12,003	−1.1%
Linn County	11,815	−0.3%
Barton County	11,795	+1.5%

Elsewhere on the site

Sources

Census Bureau population estimates — counties and Puerto Rico municipios, with components of change — U.S. Census Bureau · U.S. Government work · retrieved September 25, 2026
American Community Survey 5-year estimates — table-based Summary File · U.S. Government work

Data retrieved September 25, 2026