Demographics of Platte County, Wyoming

Platte County, Wyoming had 8,634 people on July 1, 2025, by the Census Bureau’s estimate: +2 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.

Platte County, in four figures

8,634
Population: July 1, 2025, Vintage 2025 estimate.; < +0.1%
Change since July 2020: +2 people.; 47.0 ±3.3
Median age: ACS 2020–⁠2024.; $67,718 ±$6,763
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.

Platte County, Wyoming's population grew < 0.1% from July 2020 to July 2025, against +3.1% nationally

The July 1 estimate of Platte County, Wyoming'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

Platte County, Wyoming's population grew < 0.1% from July 2020 to July 2025, against +3.1% nationally. The July 1 estimate of Platte County, Wyoming'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	8,632	100.0	100.0
2021	8,681	100.6	100.2
2022	8,653	100.2	100.7
2023	8,604	99.7	101.6
2024	8,563	99.2	102.5
2025	8,634	100.0	103.1

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Population of Platte County, Wyoming on July 1 of each year, Vintage 2025
July 1	Population	Change	Births less deaths	From abroad	From elsewhere in the country
2020	8,632	+30	−5	0	+35
2021	8,681	+49	−51	0	+100
2022	8,653	−28	−94	+18	+52
2023	8,604	−49	−24	+23	−45
2024	8,563	−41	−20	+25	−45
2025	8,634	+71	−21	+13	+80

Age, 2020–2024

The median age is 47.0 ±3.3: for men 46.2 ±2.3 and for women 49.9 ±3.4. Shares are of everyone the survey counts, in the Bureau’s sex-by-age table (B01001).

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People in Platte County by age, ACS 2020–2024
Age	People	Share	Wyoming	United States
Under 5	364 ±20	4.2% ±0.2	5.4% ±0.1	5.6% ±<0.1
5 to 17	1,378 ±225	16.0% ±2.6	17.2% ±0.3	16.3% ±<0.1
18 to 24	289 ±93	3.4% ±1.1	9.0% ±0.2	9.1% ±<0.1
25 to 44	2,093 ±249	24.3% ±2.9	26.1% ±0.3	26.9% ±<0.1
45 to 64	2,155 ±245	25.0% ±2.8	23.8% ±0.3	24.8% ±<0.1
65 and over	2,333 ±267	27.1% ±3.1	18.5% ±0.3	17.2% ±<0.1

Income and poverty, 2020–2024

Median household income is $67,718 ±$6,763, and income per person $39,225 ±$3,157, in 2024 dollars. The median is $76,176 ±$1,168 in Wyoming and $80,734 ±$166 in the United States.

Households by income

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Households in Platte County by income, ACS 2020–2024
Household income	Households	Share	Wyoming	United States
Under $25,000	678 ±213	17.6% ±5.5	14.3% ±0.6	14.6% ±<0.1
$25,000 to $49,999	720 ±172	18.7% ±4.3	18.0% ±0.6	16.7% ±<0.1
$50,000 to $74,999	744 ±232	19.3% ±5.9	17.0% ±0.6	15.5% ±<0.1
$75,000 to $99,999	419 ±114	10.9% ±2.9	13.7% ±0.5	12.6% ±<0.1
$100,000 to $149,999	643 ±165	16.7% ±4.2	18.9% ±0.6	17.5% ±<0.1
$150,000 to $199,999	362 ±111	9.4% ±2.8	9.5% ±0.5	9.6% ±<0.1
$200,000 or more	282 ±126	7.3% ±3.2	8.5% ±0.5	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 Platte County by age, ACS 2020–2024
Age	Below poverty	Rate	Wyoming	United States
All ages	655 ±216	7.7% ±2.6	10.5% ±0.6	12.5% ±0.1
Under 18	7 to 67	0.5% to 3.9%	11.7% ±0.9	16.1% ±0.1
18 to 59	142 to 500	3.8% to 13.1%	10.8% ±0.6	11.6% ±0.1
60 and over	297 ±128	10.0% ±4.2	8.8% ±0.6	11.0% ±<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%.

Housing, 2020–2024

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Housing in Platte County, ACS 2020–2024
Measure	Platte County	Wyoming	United States
Housing units	4,688 ±13	277,141 ±187	143,775,355 ±10,234
Occupied	82.1% ±4.7	87.8% ±0.5	89.9% ±0.1
Vacant	17.9% ±4.6	12.2% ±0.6	10.1% ±0.1
Owner occupied	76.1% ±3.7	71.8% ±0.6	65.2% ±0.3
Renter occupied	23.9% ±6.3	28.2% ±0.6	34.8% ±0.1
Median home value	$297,900 ±$33,437	$309,700 ±$3,824	$332,700 ±$236
Median gross rent	$781 ±$362	$992 ±$17	$1,413 ±$2
Median year built	1976 ±2	1981 ±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 Platte County by Hispanic origin and race, ACS 2020–2024
Origin	People	Share	Wyoming	United States
Hispanic or Latino	761 ±0	8.8% ±<0.1	10.7% ±<0.1	19.3% ±<0.1
White alone, not Hispanic	7,318 ±176	85.0% ±2.0	81.4% ±0.2	57.4% ±<0.1
Black alone, not Hispanic	0 to 62	0% to 0.7%	0.8% ±0.1	11.9% ±<0.1
Asian alone, not Hispanic	0 to 18	0% to 0.2%	0.8% ±0.1	5.9% ±<0.1
American Indian and Alaska Native alone, not Hispanic	5 to 65	0.1% to 0.8%	1.6% ±0.1	0.5% ±<0.1
Native Hawaiian and Other Pacific Islander alone, not Hispanic	0 to 77	0% to 0.9%	0.1% ±<0.1	0.2% ±<0.1
Some other race alone, not Hispanic	0 to 25	0% to 0.3%	0.7% ±0.1	0.6% ±<0.1
Two or more races, not Hispanic	424 ±186	4.9% ±2.2	4.0% ±0.2	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 Platte County by place of birth and citizenship, ACS 2020–2024
Born	People	Share	Wyoming	United States
Born in the state	3,538 ±357	41.1% ±4.1	41.6% ±0.6	57.3% ±<0.1
Born in another state	4,989 ±366	57.9% ±4.2	54.0% ±0.6	26.9% ±<0.1
Born a citizen outside the states	5 to 67	0.1% to 0.8%	0.9% ±0.1	1.7% ±<0.1
Born abroad	0 to 113	0% to 1.3%	3.5% ±0.2	14.1% ±<0.1
Naturalized citizens	0 to 13	0% to 0.2%	1.6% ±0.1	7.4% ±<0.1
Not citizens	0 to 108	0% to 1.3%	1.9% ±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%.

Platte County among the counties of Wyoming

18th of 23 by population, July 2025. Every one is listed on the Wyoming page.

Counties of Wyoming near Platte County in population, July 2025
County	July 2025	Change since 2020
Converse County	13,824	+0.6%
Goshen County	12,640	+1.0%
Big Horn County	12,024	+4.7%
Sublette County	8,929	+2.2%
Johnson County	8,908	+5.2%
Platte County	8,634	< +0.1%
Crook County	7,852	+9.3%
Washakie County	7,597	−0.8%
Weston County	6,840	+0.3%
Hot Springs County	4,600	−0.5%
Niobrara County	2,341	−4.5%

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