County outline
Where Archuleta County is located
Area breakdown
Land accounts for 99.6% of Archuleta County’s measured area and water for 0.4%. Its combined area converts to 3,510.5 square kilometers or approximately 867,452 acres.
Green: land · blue: water
| Measurement | Square miles | Square kilometers | Acres |
|---|---|---|---|
| Land | 1,350.087 | 3,496.709 | 864,055.7 |
| Water | 5.306 | 13.742 | 3,395.8 |
| Total | 1,355.393 | 3,510.452 | 867,451.5 |
How Archuleta County compares
By original Census land area, Archuleta County ranks #33 of 64 in Colorado and #444 of 3,222 nationally. National rankings include the 50 states, District of Columbia, and Puerto Rico.
Its land area is 0.943 times the Colorado county-equivalent median of 1,431.5 square miles. It accounts for 1.3% of the combined county land area in the state.
See the complete Colorado ranking · What counts as a county equivalent?
Population and density of Archuleta County
The Census Bureau estimates that 14,306 people lived in Archuleta County on July 1, 2025. That ranks #2,207 of 3,222 county equivalents nationally and #34 of 64 in Colorado. Since the April 1, 2020 estimates base of 13,356, the population has grown by 950 (+7.1%), compared with +4.1% for Colorado as a whole.
With 1,350.1 square miles of land, that is 11 people per square mile (4.1 per km²), placing Archuleta County #2,626 nationally for density and #34 in Colorado. The median county equivalent has 47 people per square mile; the Colorado median is 11. Put another way, there are about 60 acres of land per resident.
| July 1 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
|---|---|---|---|---|---|---|
| Estimate | 13,426 | 13,808 | 13,975 | 14,156 | 14,134 | 14,306 |
| Change | — | +382 | +167 | +181 | −22 | +172 |
U.S. Census Bureau, Vintage 2025 population estimates. Estimates are revised each year and are not decennial census counts. Density divides the whole population by the whole county’s land area, so it describes an average, not how settlement is distributed within the county. Population sources and methods.
Cities and towns in Archuleta County
1 incorporated place lies at least partly in Archuleta County. Together they are home to 1,838 people (12.8%); the other 12,468 (87.2%) live outside any incorporated place, in unincorporated communities and rural areas.
The largest is Pagosa Springs town, with 1,838 residents in the county.
Metropolitan area
Archuleta County is not part of any metropolitan or micropolitan statistical area in the Office of Management and Budget’s July 2023 delineation; 1,306 other county equivalents are also outside one. These areas are built around an urban core of at least 10,000 people plus the counties tied to it by commuting, so counties outside them are generally rural.
ZIP codes
5 ZIP Code Tabulation Areas have land in Archuleta County; 3 of them have most of their land inside the county, and the others mainly cover neighboring areas.
8112181122811288113781147
ZIP Code Tabulation Areas are the Census Bureau’s approximations of USPS ZIP Code service areas, from the 2020 Census relationship files. Lighter codes have less than half of their land in this county. Post-office-box and single-address ZIP Codes have no tabulation area.
Counties bordering Archuleta County
Archuleta County shares a land border with 7 county equivalents, including 2 in New Mexico. It has more land than 4 of them. The largest neighbor is Rio Arriba County (5,860.9 mi²) and the smallest is Mineral County (875.8 mi²). Together with its neighbors, Archuleta County forms a block of 18,610.2 mi² of land, of which it holds 7.3%.
| Bordering county equivalent | Land mi² | Size vs. Archuleta | Compare |
|---|---|---|---|
| Rio Arriba CountyNew Mexico | 5,860.9 | 4.3× larger | Compare |
| San Juan CountyNew Mexico | 5,517.2 | 4.1× larger | Compare |
| La Plata County | 1,689.7 | 1.3× larger | Compare |
| Conejos County | 1,287.4 | about the same | Compare |
| Hinsdale County | 1,117.2 | 1.2× smaller | Compare |
| Rio Grande County | 912 | 1.5× smaller | Compare |
| Mineral County | 875.8 | 1.5× smaller | Compare |
How big is Archuleta County compared with U.S. states?
Archuleta County has more land than 1 of the 50 states. It is about 1.3 times the land area of Rhode Island (1,033.9 mi²), while Delaware, the next larger state, has 1.4 times as much land (1,948.6 mi²). Colorado’s county land could hold about 77 areas the size of Archuleta County.
Another way to picture it: the same land area would fill a square about 36.7 miles (59.1 km) on each side. Real county shapes are rarely square, so this is a scale reference rather than a width or driving distance.
State figures are the sums of each state’s county-equivalent land measurements in the same Census release, so states and counties are compared on the same basis. Published state totals can differ slightly because of rounding. Compare all states · Counties bigger than entire states.
What stands out about Archuleta County?
Archuleta County has more land than 2,778 of the other 3,221 county equivalents in the dataset.
A median is the middle county-equivalent measurement, not the average of the largest and smallest. All three bars use the same linear scale. Very small areas may appear as a thin sliver; the labels retain their values.
Does including water change its rank?
Using land plus water places Archuleta County at #506 nationally by total area, 62 places farther from the top than its land rank. Other county equivalents gain more area when their water measurements are included.
Its water share is 0.4%, compared with a national county-equivalent median of 1.2% — 0.8 percentage points lower. This describes the statistical geography’s land/water mix, not flood exposure or developable land.
Closest positions in the national land ranking
These entries sit immediately beside Archuleta County in the national ranking. They can be in different states and are not necessarily geographic neighbors.
| Land rank | County equivalent | Land mi² | Comparison |
|---|---|---|---|
| #443 | Kidder County, North Dakota | 1,351.1 | Compare |
| #444 | Archuleta County, Colorado | 1,350.1 | This county |
| #445 | Stearns County, Minnesota | 1,342.9 | Compare |
Calculated from the same Census release as the area table. Total-area order uses original ALAND + AWATER; water shares and chart labels use published square miles. Calculation details.
Representative coordinates
The Census internal point is 37.202395, -107.050863. It represents a location inside the geography; it is not necessarily the centroid or the address of a courthouse.
Source and precision
U.S. Census Bureau, 2026 Gazetteer Files, Counties. Original ALAND: 3,496,709,806 m²; AWATER: 13,742,614 m². Rankings use ALAND; exact ties use ascending GEOID. Tables preserve Census-published square miles to three decimals, with conversions based on those values.
Common questions
How big is Archuleta County?
Archuleta County, Colorado has 1,350.1 square miles (3,496.7 km²) of land and 5.306 square miles of water, for a total area of 1,355.4 square miles. It ranks #444 of 3,222 U.S. county equivalents by land area.
Is Archuleta County the largest county in Colorado?
No. Archuleta County ranks #33 of 64 in Colorado by land area. The largest is Las Animas County, with 4,772.9 square miles of land.
What counties border Archuleta County?
Archuleta County shares a land border with Rio Arriba County, New Mexico, Conejos County, La Plata County, Mineral County, Hinsdale County, San Juan County, New Mexico, and Rio Grande County.
What is the population of Archuleta County?
The Census Bureau estimates Archuleta County had 14,306 residents on July 1, 2025, ranking #2,207 of 3,222 county equivalents. That is 11 people per square mile of land.
What is the county seat of Archuleta County?
The county seat of Archuleta County is Pagosa Springs.
Is Archuleta County part of a metropolitan area?
No. Archuleta County is outside every metropolitan and micropolitan statistical area in the July 2023 OMB delineation.
How many ZIP codes are in Archuleta County?
5 ZIP Code Tabulation Areas have land in Archuleta County, and 3 of them have most of their land inside the county. Census ZIP Code Tabulation Areas approximate USPS ZIP Code areas.
How does Archuleta County compare with U.S. states?
It has more land than 1 of the 50 states, including Rhode Island (1,033.9 square miles of land).
How many acres of land are in Archuleta County?
The land measurement converts to approximately 864,056 acres. Including water, total area is approximately 867,452 acres. One square mile equals 640 acres.
Why might another source show a different area?
Check whether it reports land or total area, its Census vintage, and its rounding. Our guide explains how to reconcile county area figures.
Can this establish a property boundary?
No. Statistical measurements and generalized maps do not establish property lines. Consult the relevant local surveying or land-records authority.