Conejos County area

Population and density of Conejos County

The Census Bureau estimates that 7,529 people lived in Conejos County on July 1, 2025. That ranks #2,688 of 3,222 county equivalents nationally and #42 of 64 in Colorado. Since the April 1, 2020 estimates base of 7,464, the population has grown by 65 (+0.9%), compared with +4.1% for Colorado as a whole.

With 1,287.4 square miles of land, that is 5.8 people per square mile (2.3 per km²), placing Conejos County #2,810 nationally for density and #43 in Colorado. The median county equivalent has 47 people per square mile; the Colorado median is 11. Put another way, there are about 109 acres of land per resident.

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 Conejos County

5 incorporated places lie at least partly in Conejos County. Together they are home to 3,487 people (46.3%); the other 4,042 (53.7%) live outside any incorporated place, in unincorporated communities and rural areas.

The largest is Manassa town, with 958 residents in the county. By land, Sanford town is the largest at 1.46 mi².

Population: U.S. Census Bureau Vintage 2025 subcounty estimates, counting only the part of each place inside Conejos County. Land: 2026 Census Gazetteer, for the whole place even where it extends into other counties. How communities are listed.

Metropolitan area

Conejos County is an outlying county of the Alamosa, CO Micropolitan Statistical Area. Its 3 county equivalents have 27,896 residents on 3,237.7 square miles of land; Conejos County accounts for 39.8% of the land and 27% of the residents. By combined land it ranks #44 of 542 micropolitan areas, and #456 by population.

ZIP codes

8 ZIP Code Tabulation Areas have land in Conejos County; 6 of them have most of their land inside the county, and the others mainly cover neighboring areas.

8110181120811248112981140811418114881151

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 Conejos County

Conejos County shares a land border with 6 county equivalents, including 2 in New Mexico. It has more land than 3 of them. The largest neighbor is Rio Arriba County (5,860.9 mi²) and the smallest is Alamosa County (722.6 mi²). Together with its neighbors, Conejos County forms a block of 13,563 mi² of land, of which it holds 9.5%.

How big is Conejos County compared with U.S. states?

Conejos County has more land than 1 of the 50 states. It is about 1.2 times the land area of Rhode Island (1,033.9 mi²), while Delaware, the next larger state, has 1.5 times as much land (1,948.6 mi²). Colorado’s county land could hold about 80 areas the size of Conejos County.

Another way to picture it: the same land area would fill a square about 35.9 miles (57.7 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 Conejos County?

Conejos County has more land than 2,756 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 Conejos County at #539 nationally by total area, 73 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 0.3%, compared with a national county-equivalent median of 1.2% — 0.9 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 Conejos County in the national ranking. They can be in different states and are not necessarily geographic neighbors.

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.