Demographics of Montgomery County, Iowa

Montgomery County, Iowa had 10,002 people on July 1, 2025, by the Census Bureau’s estimate: −332 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.

Montgomery County, in four figures

10,002
Population: July 1, 2025, Vintage 2025 estimate.; −3.2%
Change since July 2020: −332 people.; 43.5 ±0.5
Median age: ACS 2020–⁠2024.; $63,666 ±$5,901
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.

Montgomery County, Iowa's population shrank 3.2% from July 2020 to July 2025, against +3.1% nationally

The July 1 estimate of Montgomery 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).

Source: The Census Bureau

About this chart

The figures

Montgomery County, Iowa's population shrank 3.2% from July 2020 to July 2025, against +3.1% nationally. The July 1 estimate of Montgomery 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	10,334	100.0	100.0
2021	10,319	99.9	100.2
2022	10,207	98.8	100.7
2023	10,156	98.3	101.6
2024	10,053	97.3	102.5
2025	10,002	96.8	103.1

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Population of Montgomery 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	10,334	+2	−14	0	+15
2021	10,319	−15	−89	0	+66
2022	10,207	−112	−61	+2	−49
2023	10,156	−51	−52	+8	−6
2024	10,053	−103	−63	+8	−48
2025	10,002	−51	−77	+3	+22

Age, 2020–2024

The median age is 43.5 ±0.5: for men 41.7 ±1.2 and for women 46.2 ±1.1. Shares are of everyone the survey counts, in the Bureau’s sex-by-age table (B01001).

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People in Montgomery County by age, ACS 2020–2024
Age	People	Share	Iowa	United States
Under 5	582 ±89	5.7% ±0.9	5.9% ±<0.1	5.6% ±<0.1
5 to 17	1,725 ±179	16.9% ±1.8	17.0% ±0.1	16.3% ±<0.1
18 to 24	690 ±137	6.8% ±1.3	10.0% ±0.1	9.1% ±<0.1
25 to 44	2,246 ±167	22.0% ±1.6	25.1% ±0.1	26.9% ±<0.1
45 to 64	2,610 ±182	25.6% ±1.8	23.9% ±0.1	24.8% ±<0.1
65 and over	2,361 ±186	23.1% ±1.8	18.1% ±0.1	17.2% ±<0.1

Income and poverty, 2020–2024

Median household income is $63,666 ±$5,901, and income per person $37,894 ±$4,855, 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 Montgomery County by income, ACS 2020–2024
Household income	Households	Share	Iowa	United States
Under $25,000	947 ±202	20.7% ±4.3	13.9% ±0.2	14.6% ±<0.1
$25,000 to $49,999	889 ±172	19.4% ±3.7	18.5% ±0.3	16.7% ±<0.1
$50,000 to $74,999	779 ±161	17.0% ±3.5	17.5% ±0.3	15.5% ±<0.1
$75,000 to $99,999	659 ±127	14.4% ±2.7	14.0% ±0.3	12.6% ±<0.1
$100,000 to $149,999	715 ±129	15.6% ±2.8	18.7% ±0.3	17.5% ±<0.1
$150,000 to $199,999	457 ±110	10.0% ±2.4	8.8% ±0.2	9.6% ±<0.1
$200,000 or more	139 ±57	3.0% ±1.2	8.6% ±0.2	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 Montgomery County by age, ACS 2020–2024
Age	Below poverty	Rate	Iowa	United States
All ages	1,514 ±332	15.3% ±3.3	11.1% ±0.2	12.5% ±0.1
Under 18	409 ±143	18.6% ±6.2	12.9% ±0.3	16.1% ±0.1
18 to 59	617 ±154	13.3% ±3.2	11.4% ±0.3	11.6% ±0.1
60 and over	488 ±171	15.9% ±5.4	8.8% ±0.2	11.0% ±<0.1

Housing, 2020–2024

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Housing in Montgomery County, ACS 2020–2024
Measure	Montgomery County	Iowa	United States
Housing units	5,005 ±27	1,437,699 ±523	143,775,355 ±10,234
Occupied	91.6% ±2.9	91.5% ±0.3	89.9% ±0.1
Vacant	8.4% ±3.0	8.5% ±0.3	10.1% ±0.1
Owner occupied	69.1% ±4.2	71.7% ±0.3	65.2% ±0.3
Renter occupied	30.9% ±4.1	28.3% ±0.3	34.8% ±0.1
Median home value	$121,400 ±$11,554	$208,000 ±$1,141	$332,700 ±$236
Median gross rent	$814 ±$53	$972 ±$6	$1,413 ±$2
Median year built	1959 ±4	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 Montgomery County by Hispanic origin and race, ACS 2020–2024
Origin	People	Share	Iowa	United States
Hispanic or Latino	30 to 134	0.3% to 1.3%	7.3% ±<0.1	19.3% ±<0.1
White alone, not Hispanic	9,392 ±78	92.0% ±0.8	82.3% ±0.1	57.4% ±<0.1
Black alone, not Hispanic	83 to 285	0.8% to 2.8%	3.8% ±0.1	11.9% ±<0.1
Asian alone, not Hispanic	40 to 178	0.4% to 1.7%	2.5% ±<0.1	5.9% ±<0.1
American Indian and Alaska Native alone, not Hispanic	0 to 13	0% to 0.1%	0.2% ±<0.1	0.5% ±<0.1
Native Hawaiian and Other Pacific Islander alone, not Hispanic	0 to 79	0% to 0.8%	0.2% ±<0.1	0.2% ±<0.1
Some other race alone, not Hispanic	5 to 143	< 0.1% to 1.4%	0.3% ±<0.1	0.6% ±<0.1
Two or more races, not Hispanic	330 ±122	3.2% ±1.2	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 Montgomery County by place of birth and citizenship, ACS 2020–2024
Born	People	Share	Iowa	United States
Born in the state	7,001 ±288	68.5% ±2.8	69.6% ±0.2	57.3% ±<0.1
Born in another state	2,986 ±300	29.2% ±2.9	23.8% ±0.2	26.9% ±<0.1
Born a citizen outside the states	8 to 120	0.1% to 1.2%	0.7% ±<0.1	1.7% ±<0.1
Born abroad	163 ±74	1.6% ±0.7	5.9% ±0.1	14.1% ±<0.1
Naturalized citizens	48 to 190	0.5% to 1.9%	2.6% ±0.1	7.4% ±<0.1
Not citizens	1 to 87	< 0.1% to 0.9%	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%.

Montgomery County among the counties of Iowa

72nd of 99 by population, July 2025. Every one is listed on the Iowa page.

Counties of Iowa near Montgomery County in population, July 2025
County	July 2025	Change since 2020
Guthrie County	10,782	+1.6%
Mitchell County	10,650	+0.6%
Hancock County	10,528	−2.2%
Louisa County	10,416	−3.8%
Winnebago County	10,251	−3.8%
Montgomery County	10,002	−3.2%
Franklin County	9,868	−1.2%
Keokuk County	9,797	−2.0%
Clarke County	9,574	−1.6%
Calhoun County	9,562	−3.4%
Sac County	9,525	−2.7%

Elsewhere on the site

Rankings this appears in

No. 72 Counties by population in Iowa
No. 90 Counties by population growth in Iowa

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

Compiled automatically from Census Bureau population estimates — counties and Puerto Rico municipios, with components of change and American Community Survey 5-year estimates — table-based Summary File by a checked SQL query · Editor: Kian O'Connor · How this site is built

Data retrieved September 25, 2026