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Where 81045 is
Approximate ZIP boundary (Census ZCTA 2020). ZIP codes are mail routes, not areas, so the shape shown is the Census tabulation area that approximates it.
- 🔢 Type 81045 into a pocket calculator and turn it upside down: ShOIB — not quite a word, sorry.
- ➕ As a number, 81,045 = 3 × 3 × 5 × 1801. Its digits add up to 18, a total 2,332 other ZIP codes share.
- 💾In binary, the way a computer stores it:
10011110010010101 - 🏠 Its numerical neighbours: 81044 (Hasty, CO, 50 mi away) and 81046 (Hoehne, CO, 110 mi away).
- 🔄 Backwards, 81045 becomes 54018, which is not a ZIP code at all.
- 👥 59 other ZIP codes are made of exactly the same digits (01845, 01854, 04851, 05148, 05481, 05841, …). The farthest-flung twin is 04851 in Matinicus, ME, 1,805 miles away.
- 🧭 Farther south than 54% of all ZIP codes, and farther west than 81%.
- 🎯260 miles west of the geographic center of the Lower 48, near Lebanon, Kansas.
- 🌏 Dig straight through the Earth from 81045 and you would come out at 38.57°S, 76.85°E — 814 miles from Port-aux-Français, French Southern Territories, the nearest big city to that spot.
- ☀Longest day of the year: 14h 52m of daylight. Shortest: 9h 28m.
- 📏 At 408.8 square miles of land, 81045 is bigger than 97% of ZIP codes — room for about 310 Central Parks.
- Working out the sun…
- Checking the USGS…
Source: USGS.
People and housing
| Population | 59This ZIP59 |
|---|---|
| Households | 29This ZIP29 |
| Housing units | 60This ZIP60 |
| Median age | 52.3This ZIP52.3Colorado37.7US 38.9 |
| Median home value | $112,500This ZIP$112,500Colorado$539,400US $332,700 |
| Median gross rent | $850This ZIP$850Colorado$1,761US $1,413 |
| Bachelor's degree or higher | 12.2%This ZIP12.2% |
| Mean commute | 25.0 minThis ZIP25.0 min |
| Population density | 0.1 / sq miThis ZIP0.1 / sq mi |
Land area
| Land area | 408.82 sq miThis ZIP408.82 sq mi |
|---|---|
| Water area | 1.75 sq miThis ZIP1.75 sq mi |
Counties 81045 spans
A ZIP code is a mail route and ignores county lines. Shares are by overlapping land area.
| County | Share of this ZIP |
|---|---|
| Kiowa County | 58.6% |
| Cheyenne County | 24.9% |
| Lincoln County | 16.6% |
Other place names in 81045
Census places whose land this ZIP code overlaps. The Postal Service may accept other city names in an address, too.
ZIP codes near 81045
| ZIP | City | Distance |
|---|---|---|
81021 | Arlington, CO | 15.7 mi |
80823 | Karval, CO | 15.8 mi |
81036 | Eads, CO | 22.1 mi |
80862 | Wild Horse, CO | 25.2 mi |
80825 | Kit Carson, CO | 25.6 mi |
81092 | Wiley, CO | 27.6 mi |
81076 | Sugar City, CO | 28.7 mi |
81057 | Mc Clave, CO | 33.5 mi |
80821 | Hugo, CO | 33.9 mi |
81063 | Ordway, CO | 34.6 mi |
Find every ZIP code within 10 miles of 81045 →
Questions about this ZIP code
Where is ZIP code 81045?
81045 is in Haswell, Colorado, in Kiowa County. Its published point location is 38.5654, -103.1544.
What county is 81045 in?
81045 spans 3 counties: Kiowa County, Cheyenne County and Lincoln County. Most of it falls in Kiowa County, measured by overlapping land area — the county holding the most land in a ZIP code is not always the one holding the most residents.
What area code is 81045?
Haswell uses area code 719, from NANPA's telephone records.
What time zone is 81045 in?
81045 uses America/Denver.
How many people live in 81045?
About 59 people live in ZIP code 81045, in 29 households, at 0.1 people per square mile. These are American Community Survey 5-year estimates for the ZIP Code Tabulation Area, not a headcount.
What ZIP codes are near 81045?
The closest are 81021 (15.7 mi), 80823 (15.8 mi), 81036 (22.1 mi), 80862 (25.2 mi) and 80825 (25.6 mi).
Is 81045 a PO Box ZIP code?
81045 is a standard ZIP code. A normal ZIP code with street delivery.
Download or cite
Cite this page
zipcodes.pro. “81045 ZIP Code — Haswell, Colorado (Kiowa County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/81045
Machine-readable version of these facts:
curl https://zipcodes.pro/zip/81045.jsonUnderlying data is public domain or openly licensed — sources, vintages and licences.