ZIP code 81101
Where is ZIP code 81101?
Alamosa, Colorado
Alamosa County · Standard ZIP code
ZIP code 81101 belongs to Alamosa, Colorado in Alamosa County. 81101 is a standard ZIP code, so it covers street addresses as well as PO Boxes. It is in the Mountain Time zone and uses area code 719. About 15,550 people live in the 81101 area, where the median household income is $54,844. The closest ZIP codes are 81102 (Alamosa, 0.4 mi northwest), 81146 (Mosca, 12.1 mi north) and 81135 (Homelake, 14 mi northwest).
| ZIP code | 81101 |
|---|---|
| Type | Standard ZIP code for street addresses and PO Boxes |
| Status | Active |
| City | Alamosa |
| Also accepted | Great Sand Dunes National Mo, Sand Dunes Mo |
| State | Colorado (CO) |
| County | Alamosa County |
| Time zone | Mountain Time · now |
| Area code | 719 |
| Coordinates | 37.4703, -105.8786 map |
| 3-digit prefix | 811 |
Population and income in 81101
| Population | 15,550 · higher than 71% of Colorado ZIP codes |
|---|---|
| People per square mile | 42 · higher than 57% of Colorado ZIP codes |
| Median age | 33.4 years · lower than 90% of Colorado ZIP codes |
| Men / women | 49% / 51% |
| Median household income | $54,844 · lower than 83% of Colorado ZIP codes |
| Income per person | $29,490 |
| Below the poverty line | 18% |
| Bachelor’s degree or higher | 32% of adults 25+ |
| Median home value | $240,400 · lower than 80% of Colorado ZIP codes |
| Median rent | $912 a month |
| Housing units | 6,812 |
| Households | 6,292 (2.32 people on average) |
| Owners / renters | 55% / 45% |
| Land area | 369 sq mi (plus 0.54 sq mi of water) |
Source: U.S. Census Bureau, American Community Survey 5-year estimates (2020–2024) for ZIP Code Tabulation Area 81101. Census ZIP areas are close to, but not exactly the same as, USPS delivery areas.
ZIP codes near 81101
| ZIP code | City | Distance | Type |
|---|---|---|---|
| 81102 | Alamosa, CO | 0.4 mi NW | Unique |
| 81146 | Mosca, CO | 12.1 mi N | Standard |
| 81135 | Homelake, CO | 14 mi NW | PO Box only |
| 81140 | La Jara, CO | 14.2 mi SW | Standard |
| 81151 | Sanford, CO | 14.7 mi S | Standard |
| 81144 | Monte Vista, CO | 16 mi NW | Standard |
| 81136 | Hooper, CO | 17.5 mi N | Standard |
| 81124 | Capulin, CO | 18.1 mi SW | PO Box only |
| 81123 | Blanca, CO | 20 mi E | Standard |
| 81141 | Manassa, CO | 20.5 mi S | PO Box only |
| 81148 | Romeo, CO | 21.4 mi S | PO Box only |
| 81125 | Center, CO | 21.6 mi NW | Standard |
Straight-line distance between ZIP code center points. Find every ZIP code within 10 miles of 81101 or measure the distance to another ZIP code.
How to address mail to 81101
123 MAIN ST
ALAMOSA CO 81101
Put the city, the two-letter state code and the ZIP code on the last line. USPS also accepts GREAT SAND DUNES NATIONAL MO and SAND DUNES MO as the city name for 81101. Avoid Carmel, East Alamosa, Estrella, Henry and Stanley and other local names: USPS doesn’t recognize them as the city for this ZIP code. Adding the 4-digit ZIP+4 code (81101-XXXX) helps mail sort faster but isn’t required.
Other ZIP codes in Alamosa, CO
All Alamosa ZIP codes with population and income →
Questions
- What city is ZIP code 81101?
- 81101 is a Alamosa, Colorado ZIP code. Great Sand Dunes National Mo and Sand Dunes Mo are also accepted as the city name.
- What county is 81101 in?
- ZIP code 81101 is in Alamosa County, Colorado.
- What time zone is ZIP code 81101 in?
- 81101 is in the Mountain Time zone (America/Denver).
- What area code is 81101?
- Phone numbers in ZIP code 81101 use area code 719.
- What is the population of ZIP code 81101?
- About 15,550 people live in ZIP code 81101, according to the Census Bureau’s American Community Survey (2020–2024).
- What is the median income in 81101?
- The median household income in 81101 is $54,844 a year, lower than 83% of Colorado ZIP codes.
- What ZIP codes are near 81101?
- The nearest ZIP codes to 81101 are 81102 (Alamosa, 0.4 miles), 81146 (Mosca, 12.1 miles), 81135 (Homelake, 14 miles) and 81140 (La Jara, 14.2 miles).