Iron County, Utah

A county in Utah, ranked 8 of 29 by population.

CountyFIPS 49021

Within Utah

Iron County, highlighted, with the areas around it. Boundaries generalised from the 2025 Census cartographic boundary file; neighbour fills carry no data. The dot marks Parowan, the county seat, located via the 2025 Census Gazetteer.

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Population: 67,141; +9,438 (+16.4%) since 2020
Land area: 3,296; square miles. A further 0.1% of the total area is water
Population density: 20.4; people per square mile, computed rather than published
County seat: Parowan; Seat of county government.
Established: 1852; 173 years ago
Largest city: Cedar City city; Population 41,871.

Satellite view

Aerial imagery of Iron County with its boundary drawn on top. A map shows you the shape; this shows you what is inside it, and which side of the line a place falls on.

Aerial view of Iron County, Utah from the USGS National Map, with its boundary outlined — Imagery: USGS National Map, USGS Imagery Only, public domain, requested from USGS by your browser when you reach this point on the page, at 800 by 470 pixels. The boundary is the 2025 Census cartographic boundary file, reprojected to Web Mercator to match the imagery. You can also open the USGS National Map viewer.

Where Iron County ranks

Position among the 29 counties of Utah, and among all 3,144 US counties and county-equivalents. Computed from the figures on this page.

Measure	Value	In Utah	Nationally
Population	67,141	8th of 29	817th of 3,144
Land area	3,296 sq mi	11th of 29	155th of 3,144
Population density	20.4 per sq mi	10th of 29	2,230th of 3,144
Median household income	$66,247	24th of 29	1,502nd of 3,143

Full data for Iron County

Every figure below is attributed to the Census Bureau product it came from, with the vintage of that product.
Measure	Value	Source and vintage
Population	67,141	Vintage 2025 Population Estimates
Population in 2020	57,703	Vintage 2025 Population Estimates
2020 estimates base?	57,272	Vintage 2025 Population Estimates
Land area	3,296 sq mi	2025 Gazetteer Files
Water area	4.4 sq mi	2025 Gazetteer Files
Total area	3,301 sq mi	2025 Gazetteer Files
Population density?	20.4 per sq mi	Computed: Vintage 2025 estimates divided by 2025 Gazetteer land area
Median household income	$66,247	American Community Survey 2020-2024 5-Year Estimates
Median home value	$379,000	American Community Survey 2020-2024 5-Year Estimates
Median age	30.2	American Community Survey 2020-2024 5-Year Estimates
Households	20,157	American Community Survey 2020-2024 5-Year Estimates
Housing units	23,550	American Community Survey 2020-2024 5-Year Estimates

Sources: US Census Bureau, Population Estimates Program, Vintage 2025 Population Estimates, released 26 March 2026; US Census Bureau, Gazetteer Files, 2025 Gazetteer Files, released 10 September 2025; US Census Bureau, American Community Survey, American Community Survey 2020-2024 5-Year Estimates, released 29 January 2026. Population density is computed here, not published: it divides the Vintage 2025 population estimate by the 2025 Gazetteer land area, which are two different Census products. Retrieved 30 August 2026.

How the population changed

The Census Bureau publishes the components behind an estimate, not just the total. For the year to July 2025:

Births minus deaths: +413; 865 births, 452 deaths
Net migration: +1,173; More people moved in than moved out.

Source: US Census Bureau, Population Estimates Program, Vintage 2025 Population Estimates, released 26 March 2026. Retrieved 30 August 2026.

The 5 areas bordering Iron County

Ordered by the length of the border actually shared, which the Census Bureau publishes in its county adjacency file and which no other county reference presents.

Bordering area	State	Shared border	Population
Beaver County	Utah	86 mi	7,301
Washington County	Utah	76 mi	213,670
Garfield County	Utah	56 mi	5,256
Lincoln County	Nevada	38 mi	4,320
Kane County	Utah	15 mi	8,597

Source: US Census Bureau, County Adjacency File, 2025 County Adjacency File, released 15 September 2025. Retrieved 30 August 2026.

Data on this page last rebuilt 30 August 2026. How these figures are produced.

Satellite view

Where Iron County ranks

Full data for Iron County

How the population changed

The 5 areas bordering Iron County

All 29 counties of Utah