Demographics of Monroe County, Iowa

Monroe County, Iowa had 7,406 people on July 1, 2025, by the Census Bureau’s estimate: −194 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.

Monroe County, in four figures

7,406
Population: July 1, 2025, Vintage 2025 estimate.; −2.6%
Change since July 2020: −194 people.; 41.8 ±2.7
Median age: ACS 2020–⁠2024.; $70,996 ±$9,872
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.

Monroe County, Iowa's population shrank 2.6% from July 2020 to July 2025, against +3.1% nationally

The July 1 estimate of Monroe County, Iowa'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

Monroe County, Iowa's population shrank 2.6% from July 2020 to July 2025, against +3.1% nationally. The July 1 estimate of Monroe County, Iowa'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	7,600	100.0	100.0
2021	7,590	99.9	100.2
2022	7,531	99.1	100.7
2023	7,490	98.6	101.6
2024	7,394	97.3	102.5
2025	7,406	97.4	103.1

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Population of Monroe County, Iowa on July 1 of each year, Vintage 2025
July 1	Population	Change	Births less deaths	From abroad	From elsewhere in the country
2020	7,600	+23	0	0	+21
2021	7,590	−10	−43	0	+28
2022	7,531	−59	−42	0	−15
2023	7,490	−41	−30	−2	−7
2024	7,394	−96	−37	−2	−58
2025	7,406	+12	−43	−6	+62

Age, 2020–2024

The median age is 41.8 ±2.7: for men 39.5 ±1.2 and for women 43.4 ±1.5. Shares are of everyone the survey counts, in the Bureau’s sex-by-age table (B01001).

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People in Monroe County by age, ACS 2020–2024
Age	People	Share	Iowa	United States
Under 5	437 ±34	5.8% ±0.5	5.9% ±<0.1	5.6% ±<0.1
5 to 17	1,294 ±152	17.2% ±2.0	17.0% ±0.1	16.3% ±<0.1
18 to 24	565 ±144	7.5% ±1.9	10.0% ±0.1	9.1% ±<0.1
25 to 44	1,683 ±144	22.4% ±1.9	25.1% ±0.1	26.9% ±<0.1
45 to 64	1,986 ±171	26.4% ±2.3	23.9% ±0.1	24.8% ±<0.1
65 and over	1,548 ±173	20.6% ±2.3	18.1% ±0.1	17.2% ±<0.1

Income and poverty, 2020–2024

Median household income is $70,996 ±$9,872, and income per person $35,132 ±$1,935, in 2024 dollars. The median is $75,059 ±$418 in Iowa and $80,734 ±$166 in the United States.

Households by income

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Households in Monroe County by income, ACS 2020–2024
Household income	Households	Share	Iowa	United States
Under $25,000	453 ±116	14.7% ±3.7	13.9% ±0.2	14.6% ±<0.1
$25,000 to $49,999	582 ±159	18.8% ±5.1	18.5% ±0.3	16.7% ±<0.1
$50,000 to $74,999	622 ±163	20.1% ±5.2	17.5% ±0.3	15.5% ±<0.1
$75,000 to $99,999	449 ±94	14.5% ±3.0	14.0% ±0.3	12.6% ±<0.1
$100,000 to $149,999	550 ±150	17.8% ±4.8	18.7% ±0.3	17.5% ±<0.1
$150,000 to $199,999	337 ±120	10.9% ±3.9	8.8% ±0.2	9.6% ±<0.1
$200,000 or more	35 to 157	1.1% to 5.1%	8.6% ±0.2	13.4% ±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%.

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 Monroe County by age, ACS 2020–2024
Age	Below poverty	Rate	Iowa	United States
All ages	673 ±214	9.2% ±2.9	11.1% ±0.2	12.5% ±0.1
Under 18	178 ±83	10.4% ±4.8	12.9% ±0.3	16.1% ±0.1
18 to 59	266 ±100	7.1% ±2.7	11.4% ±0.3	11.6% ±0.1
60 and over	229 ±95	12.0% ±4.8	8.8% ±0.2	11.0% ±<0.1

Housing, 2020–2024

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Housing in Monroe County, ACS 2020–2024
Measure	Monroe County	Iowa	United States
Housing units	3,656 ±20	1,437,699 ±523	143,775,355 ±10,234
Occupied	84.5% ±3.8	91.5% ±0.3	89.9% ±0.1
Vacant	15.5% ±3.9	8.5% ±0.3	10.1% ±0.1
Owner occupied	81.3% ±3.1	71.7% ±0.3	65.2% ±0.3
Renter occupied	18.7% ±4.7	28.3% ±0.3	34.8% ±0.1
Median home value	$156,300 ±$13,605	$208,000 ±$1,141	$332,700 ±$236
Median gross rent	$798 ±$171	$972 ±$6	$1,413 ±$2
Median year built	1970 ±5	1972 ±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 Monroe County by Hispanic origin and race, ACS 2020–2024
Origin	People	Share	Iowa	United States
Hispanic or Latino	156 ±0	2.1% ±<0.1	7.3% ±<0.1	19.3% ±<0.1
White alone, not Hispanic	7,121 ±23	94.8% ±0.3	82.3% ±0.1	57.4% ±<0.1
Black alone, not Hispanic	28 to 152	0.4% to 2.0%	3.8% ±0.1	11.9% ±<0.1
Asian alone, not Hispanic	10 to 60	0.1% to 0.8%	2.5% ±<0.1	5.9% ±<0.1
American Indian and Alaska Native alone, not Hispanic	0 to 29	0% to 0.4%	0.2% ±<0.1	0.5% ±<0.1
Native Hawaiian and Other Pacific Islander alone, not Hispanic	0 to 13	0% to 0.2%	0.2% ±<0.1	0.2% ±<0.1
Some other race alone, not Hispanic	0 to 40	0% to 0.5%	0.3% ±<0.1	0.6% ±<0.1
Two or more races, not Hispanic	18 to 142	0.2% to 1.9%	3.5% ±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 Monroe County by place of birth and citizenship, ACS 2020–2024
Born	People	Share	Iowa	United States
Born in the state	6,098 ±248	81.2% ±3.3	69.6% ±0.2	57.3% ±<0.1
Born in another state	1,247 ±273	16.6% ±3.6	23.8% ±0.2	26.9% ±<0.1
Born a citizen outside the states	16 to 208	0.2% to 2.8%	0.7% ±<0.1	1.7% ±<0.1
Born abroad	22 to 90	0.3% to 1.2%	5.9% ±0.1	14.1% ±<0.1
Naturalized citizens	10 to 58	0.1% to 0.8%	2.6% ±0.1	7.4% ±<0.1
Not citizens	0 to 46	0% to 0.6%	3.3% ±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%.

Monroe County among the counties of Iowa

87th of 99 by population, July 2025. Every one is listed on the Iowa page.

Counties of Iowa near Monroe County in population, July 2025
County	July 2025	Change since 2020
Palo Alto County	8,899	−1.0%
Lucas County	8,847	+2.6%
Greene County	8,658	−1.0%
Monona County	8,539	−2.4%
Decatur County	7,655	−0.9%
Monroe County	7,406	−2.6%
Adair County	7,403	−1.3%
Worth County	7,338	−1.3%
Van Buren County	7,131	−1.2%
Pocahontas County	6,819	−3.6%
Ida County	6,777	−3.4%

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