Costilla County · Colorado
ZIP code 81123
- Population
- 726
- Median income
- $37,173
- Median home
- $123,800
- Sales tax
- 2.9%
ZCTA residents
Household, past 12 months
Owner-occupied value
Colorado state rate
Quick answer
ZIP 81123 sits in Costilla County, Colorado and is home to 726 people. Median household income is $37,173, the median home is worth $123,800 and median gross rent is —. 81.8% of households own their home, and purchases are taxed at 2.9% (Colorado state rate).
- County
- Costilla County
- State
- Colorado (CO)
- Area codes
- Not published
- Metro area
- Outside covered metros
FIPS 08023
528 ZIPs covered
No NANPA match for this ZIP
Rate jurisdiction used for tax
The numbers for 81123
American Community Survey 2019-2023 ACS 5-year estimates for this ZCTA.
- Population
- 726ZIP 81123 residents
- Median household income
- $37,173Past 12 months, inflation adjusted
- Median home value
- $123,800Owner-occupied units
- Median gross rent
- —Rent plus utilities, monthly
- Median age
- 48.3 yrsAll residents
- Homeownership rate
- 81.8%Owner-occupied households
Sales tax in 81123
What a purchase inside this ZIP costs at checkout.
Colorado levies 2.9% statewide, and counties, cities and special districts inside this ZIP can add their own local rate on top. Check the county page for the local component before you quote a price.
Affordability in this ZIP
Derived from the Census medians above — indicative, not an offer.
A rent burden above 30% is the federal threshold for cost-burdened households, and a price-to-income multiple above 4× is generally considered a stretched housing market. The mortgage figure is principal and interest only — taxes, insurance and HOA dues are extra.
How 81123 compares
ZIP 81123 against the median ZIP in Costilla County and across Colorado.
| Measure | ZIP 81123 | County median | State median | vs state |
|---|---|---|---|---|
| Median household income | $37,173 | $39,542 | $80,917 | -54% |
| Median home value | $123,800 | $156,900 | $428,850 | -71% |
| Median gross rent | — | $764 | $1,455 | — |
| Population | 726 | 891 | 2,604 | -72% |
Medians are computed across the 6 ZIP areas in Costilla County and the 528 ZIP areas in Colorado.
Statewide rank
Where this ZIP places among all 528 Colorado ZIP areas.
- Income
- #454
- Home value
- #453
- Population
- #369
richer than 3% of 468 state ZIPs
above 4% of 472 state ZIPs
larger than 30% of 528 state ZIPs
Comparable ZIP codes
Colorado ZIP areas with almost the same household income.
Nearby ZIP codes
Other ZIP codes filed under Costilla County.
ZIP 81123 questions
Common questions about this ZIP code.
- Where is ZIP code 81123?
- ZIP 81123 lies mostly in Costilla County, Colorado. County assignment follows the largest share of land area, so a ZIP straddling a county line is filed under its dominant county.
- What sales tax do I pay in 81123?
- Colorado charges 2.9% statewide, plus any county, city or district rate that applies locally.
- Is 81123 expensive to live in?
- Median rent runs — a month, and the median home is worth $123,800 — -71% against the typical Colorado ZIP.
- Is a ZCTA the same as a postal ZIP code?
- Not exactly. The Census builds ZIP Code Tabulation Areas from the ZIP codes of addresses inside each census block, so a ZCTA can differ slightly from the USPS delivery route of the same number, and PO-box-only ZIPs have no ZCTA at all.
Keep going
Related pages for this area.
Sources & transparency
- US Census Bureau, ACS 2019-2023 5-year estimates — 2019-2023 ACS 5-year — population, income, housing
- Census 2020 ZCTA-to-county relationship file — County assignment by largest land-area overlap
- Colorado Department of Revenue — Sales tax rates and local add-ons
Last reviewed December 2024. Figures are published for reference and can change; verify with the source agency before filing or contracting. How we build and check this data.