Demographics of Montgomery County, Kansas

Montgomery County, Kansas had 30,177 people on July 1, 2025, by the Census Bureau’s estimate: −1,224 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

30,177
Population: July 1, 2025, Vintage 2025 estimate.; −3.9%
Change since July 2020: −1,224 people.; 41.2 ±0.9
Median age: ACS 2020–⁠2024.; $55,697 ±$4,353
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, Kansas's population shrank 3.9% from July 2020 to July 2025, against +3.1% nationally

The July 1 estimate of Montgomery County, Kansas'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

Montgomery County, Kansas's population shrank 3.9% from July 2020 to July 2025, against +3.1% nationally. The July 1 estimate of Montgomery County, Kansas'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	31,401	100.0	100.0
2021	31,190	99.3	100.2
2022	30,909	98.4	100.7
2023	30,721	97.8	101.6
2024	30,406	96.8	102.5
2025	30,177	96.1	103.1

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Population of Montgomery County, Kansas on July 1 of each year, Vintage 2025
July 1	Population	Change	Births less deaths	From abroad	From elsewhere in the country
2020	31,401	−88	−20	0	−67
2021	31,190	−211	−167	+7	−75
2022	30,909	−281	−203	+14	−79
2023	30,721	−188	−155	+58	−86
2024	30,406	−315	−167	+91	−234
2025	30,177	−229	−171	+36	−97

Age, 2020–2024

The median age is 41.2 ±0.9: for men 38.8 ±1.1 and for women 42.9 ±1.0. 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	Kansas	United States
Under 5	1,776 ±122	5.7% ±0.4	6.0% ±<0.1	5.6% ±<0.1
5 to 17	5,542 ±335	17.9% ±1.1	17.8% ±0.1	16.3% ±<0.1
18 to 24	2,793 ±270	9.0% ±0.9	10.2% ±0.1	9.1% ±<0.1
25 to 44	6,829 ±337	22.1% ±1.1	25.8% ±0.1	26.9% ±<0.1
45 to 64	7,717 ±422	24.9% ±1.4	23.3% ±0.1	24.8% ±<0.1
65 and over	6,283 ±441	20.3% ±1.4	17.0% ±0.2	17.2% ±<0.1

Income and poverty, 2020–2024

Median household income is $55,697 ±$4,353, and income per person $30,146 ±$1,214, in 2024 dollars. The median is $74,275 ±$475 in Kansas 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	Kansas	United States
Under $25,000	2,798 ±350	21.7% ±2.7	13.9% ±0.3	14.6% ±<0.1
$25,000 to $49,999	2,890 ±356	22.4% ±2.7	18.9% ±0.3	16.7% ±<0.1
$50,000 to $74,999	2,512 ±321	19.5% ±2.4	17.7% ±0.3	15.5% ±<0.1
$75,000 to $99,999	1,920 ±290	14.9% ±2.2	13.5% ±0.3	12.6% ±<0.1
$100,000 to $149,999	1,765 ±261	13.7% ±2.0	17.7% ±0.3	17.5% ±<0.1
$150,000 to $199,999	570 ±133	4.4% ±1.0	8.8% ±0.2	9.6% ±<0.1
$200,000 or more	425 ±119	3.3% ±0.9	9.6% ±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	Kansas	United States
All ages	4,779 ±538	15.9% ±1.8	11.3% ±0.2	12.5% ±0.1
Under 18	1,606 ±267	22.0% ±3.4	13.1% ±0.4	16.1% ±0.1
18 to 59	2,367 ±313	16.6% ±2.1	11.5% ±0.2	11.6% ±0.1
60 and over	806 ±177	9.5% ±2.0	9.0% ±0.3	11.0% ±<0.1

Housing, 2020–2024

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Housing in Montgomery County, ACS 2020–2024
Measure	Montgomery County	Kansas	United States
Housing units	15,538 ±31	1,293,635 ±880	143,775,355 ±10,234
Occupied	82.9% ±2.2	90.8% ±0.3	89.9% ±0.1
Vacant	17.1% ±2.2	9.2% ±0.3	10.1% ±0.1
Owner occupied	72.9% ±2.4	67.2% ±0.4	65.2% ±0.3
Renter occupied	27.1% ±3.0	32.8% ±0.3	34.8% ±0.1
Median home value	$101,700 ±$8,675	$217,200 ±$1,343	$332,700 ±$236
Median gross rent	$761 ±$38	$1,060 ±$7	$1,413 ±$2
Median year built	1958 ±3	1976 ±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	Kansas	United States
Hispanic or Latino	2,491 ±0	8.1% ±<0.1	13.6% ±<0.1	19.3% ±<0.1
White alone, not Hispanic	23,667 ±198	76.5% ±0.6	72.7% ±0.1	57.4% ±<0.1
Black alone, not Hispanic	1,164 ±180	3.8% ±0.6	5.2% ±0.1	11.9% ±<0.1
Asian alone, not Hispanic	0 to 100	0% to 0.3%	2.9% ±<0.1	5.9% ±<0.1
American Indian and Alaska Native alone, not Hispanic	589 ±124	1.9% ±0.4	0.4% ±<0.1	0.5% ±<0.1
Native Hawaiian and Other Pacific Islander alone, not Hispanic	0 to 122	0% to 0.4%	0.1% ±<0.1	0.2% ±<0.1
Some other race alone, not Hispanic	103 to 355	0.3% to 1.1%	0.4% ±<0.1	0.6% ±<0.1
Two or more races, not Hispanic	2,691 ±295	8.7% ±1.0	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 Montgomery County by place of birth and citizenship, ACS 2020–2024
Born	People	Share	Kansas	United States
Born in the state	18,862 ±647	61.0% ±2.1	59.2% ±0.3	57.3% ±<0.1
Born in another state	10,943 ±697	35.4% ±2.3	32.4% ±0.2	26.9% ±<0.1
Born a citizen outside the states	111 to 385	0.4% to 1.2%	1.1% ±<0.1	1.7% ±<0.1
Born abroad	887 ±194	2.9% ±0.6	7.4% ±0.1	14.1% ±<0.1
Naturalized citizens	294 ±127	1.0% ±0.4	3.2% ±0.1	7.4% ±<0.1
Not citizens	593 ±162	1.9% ±0.5	4.2% ±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%.

Montgomery County among the counties of Kansas

19th of 105 by population, July 2025. Every one is listed on the Kansas page.

Counties of Kansas near Montgomery County in population, July 2025
County	July 2025	Change since 2020
Miami County	36,240	+5.9%
Cowley County	34,382	−0.4%
Ford County	33,993	−0.6%
Harvey County	33,580	−1.2%
Lyon County	32,266	+0.5%
Montgomery County	30,177	−3.9%
McPherson County	30,064	−0.4%
Ellis County	29,075	+0.4%
Pottawatomie County	27,186	+6.9%
Franklin County	26,299	+1.1%
Barton County	24,790	−2.5%

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

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