Demographics of San Miguel County, New Mexico

San Miguel County, New Mexico had 26,260 people on July 1, 2025, by the Census Bureau’s estimate: −874 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.

San Miguel County, in four figures

26,260
Population: July 1, 2025, Vintage 2025 estimate.; −3.2%
Change since July 2020: −874 people.; 47.2 ±1.2
Median age: ACS 2020–⁠2024.; $49,431 ±$3,657
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.

San Miguel County, New Mexico's population shrank 3.2% from July 2020 to July 2025, against +3.1% nationally

The July 1 estimate of San Miguel County, New Mexico'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

San Miguel County, New Mexico's population shrank 3.2% from July 2020 to July 2025, against +3.1% nationally. The July 1 estimate of San Miguel County, New Mexico'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	27,134	100.0	100.0
2021	27,158	100.1	100.2
2022	26,879	99.1	100.7
2023	26,637	98.2	101.6
2024	26,434	97.4	102.5
2025	26,260	96.8	103.1

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Population of San Miguel County, New Mexico on July 1 of each year, Vintage 2025
July 1	Population	Change	Births less deaths	From abroad	From elsewhere in the country
2020	27,134	−71	−31	0	−42
2021	27,158	+24	−106	+9	+101
2022	26,879	−279	−192	+40	−113
2023	26,637	−242	−118	+12	−132
2024	26,434	−203	−123	+10	−94
2025	26,260	−174	−127	−4	−44

Age, 2020–2024

The median age is 47.2 ±1.2: for men 45.7 ±1.2 and for women 47.9 ±1.0. Shares are of everyone the survey counts, in the Bureau’s sex-by-age table (B01001).

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People in San Miguel County by age, ACS 2020–2024
Age	People	Share	New Mexico	United States
Under 5	1,142 ±63	4.3% ±0.2	5.2% ±<0.1	5.6% ±<0.1
5 to 17	3,386 ±398	12.6% ±1.5	16.5% ±0.2	16.3% ±<0.1
18 to 24	2,331 ±326	8.7% ±1.2	9.3% ±0.2	9.1% ±<0.1
25 to 44	5,951 ±440	22.2% ±1.6	26.0% ±0.2	26.9% ±<0.1
45 to 64	7,172 ±472	26.7% ±1.8	23.7% ±0.2	24.8% ±<0.1
65 and over	6,868 ±576	25.6% ±2.1	19.3% ±0.2	17.2% ±<0.1

Income and poverty, 2020–2024

Median household income is $49,431 ±$3,657, and income per person $29,632 ±$1,500, in 2024 dollars. The median is $64,059 ±$808 in New Mexico and $80,734 ±$166 in the United States.

Households by income

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Households in San Miguel County by income, ACS 2020–2024
Household income	Households	Share	New Mexico	United States
Under $25,000	3,540 ±539	29.7% ±4.4	20.2% ±0.4	14.6% ±<0.1
$25,000 to $49,999	2,501 ±460	21.0% ±3.8	19.6% ±0.4	16.7% ±<0.1
$50,000 to $74,999	1,928 ±378	16.2% ±3.1	16.9% ±0.4	15.5% ±<0.1
$75,000 to $99,999	1,144 ±245	9.6% ±2.0	12.4% ±0.4	12.6% ±<0.1
$100,000 to $149,999	1,627 ±319	13.6% ±2.6	15.5% ±0.4	17.5% ±<0.1
$150,000 to $199,999	905 ±247	7.6% ±2.1	7.6% ±0.2	9.6% ±<0.1
$200,000 or more	286 ±104	2.4% ±0.9	7.8% ±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 San Miguel County by age, ACS 2020–2024
Age	Below poverty	Rate	New Mexico	United States
All ages	6,304 ±988	24.4% ±3.8	17.8% ±0.4	12.5% ±0.1
Under 18	1,656 ±411	37.3% ±7.8	24.0% ±0.7	16.1% ±0.1
18 to 59	3,042 ±601	24.6% ±4.6	17.0% ±0.4	11.6% ±0.1
60 and over	1,606 ±340	17.8% ±3.6	14.3% ±0.4	11.0% ±<0.1

Housing, 2020–2024

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Housing in San Miguel County, ACS 2020–2024
Measure	San Miguel County	New Mexico	United States
Housing units	14,867 ±31	956,964 ±262	143,775,355 ±10,234
Occupied	80.3% ±2.5	87.5% ±0.3	89.9% ±0.1
Vacant	19.7% ±2.5	12.5% ±0.3	10.1% ±0.1
Owner occupied	73.1% ±1.8	70.0% ±0.4	65.2% ±0.3
Renter occupied	26.9% ±2.7	30.0% ±0.4	34.8% ±0.1
Median home value	$188,500 ±$18,158	$248,100 ±$1,957	$332,700 ±$236
Median gross rent	$823 ±$86	$1,067 ±$11	$1,413 ±$2
Median year built	1979 ±3	1985 ±2	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 San Miguel County by Hispanic origin and race, ACS 2020–2024
Origin	People	Share	New Mexico	United States
Hispanic or Latino	20,192 ±0	75.2% ±<0.1	48.4% ±<0.1	19.3% ±<0.1
White alone, not Hispanic	4,713 ±277	17.6% ±1.0	36.0% ±0.1	57.4% ±<0.1
Black alone, not Hispanic	344 ±123	1.3% ±0.5	1.8% ±0.1	11.9% ±<0.1
Asian alone, not Hispanic	21 to 173	0.1% to 0.6%	1.6% ±<0.1	5.9% ±<0.1
American Indian and Alaska Native alone, not Hispanic	386 ±157	1.4% ±0.6	8.5% ±0.1	0.5% ±<0.1
Native Hawaiian and Other Pacific Islander alone, not Hispanic	0 to 25	0% to 0.1%	0.1% ±<0.1	0.2% ±<0.1
Some other race alone, not Hispanic	91 to 459	0.3% to 1.7%	0.5% ±0.1	0.6% ±<0.1
Two or more races, not Hispanic	843 ±282	3.1% ±1.1	3.1% ±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 San Miguel County by place of birth and citizenship, ACS 2020–2024
Born	People	Share	New Mexico	United States
Born in the state	19,056 ±522	71.0% ±1.9	52.4% ±0.4	57.3% ±<0.1
Born in another state	7,016 ±500	26.1% ±1.9	36.9% ±0.3	26.9% ±<0.1
Born a citizen outside the states	36 to 214	0.1% to 0.8%	1.3% ±0.1	1.7% ±<0.1
Born abroad	653 ±223	2.4% ±0.8	9.4% ±0.2	14.1% ±<0.1
Naturalized citizens	301 ±133	1.1% ±0.5	4.1% ±0.1	7.4% ±<0.1
Not citizens	159 to 545	0.6% to 2.0%	5.3% ±0.2	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%.

San Miguel County among the counties of New Mexico

17th of 33 by population, July 2025. Every one is listed on the New Mexico page.

Counties of New Mexico near San Miguel County in population, July 2025
County	July 2025	Change since 2020
Curry County	46,655	−3.5%
Rio Arriba County	39,832	−1.0%
Taos County	34,564	+0.3%
Grant County	27,252	−3.4%
Cibola County	26,807	−0.6%
San Miguel County	26,260	−3.2%
Luna County	25,407	−0.2%
Lincoln County	19,844	−2.3%
Los Alamos County	19,407	> −0.1%
Roosevelt County	18,615	−2.8%
Torrance County	16,100	+6.9%

Elsewhere on the site

Rankings this appears in

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