99623
ZIP 99623 is in Wasilla, Alaska, in Matanuska-Susitna Borough; area code 907; Alaska time. Wasilla has 4 ZIP codes; the others are 99629, 99654 and 99687.
- Type
- Standard
- Time zone
- America/Anchorage
- County
- Matanuska-Susitna
- Metro area
- Anchorage, AK
- Population
- 23,424
- Coordinates
- 61.4393, -149.9227
Weather right now
Asking the National Weather Service…
Where 99623 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 99623 into a pocket calculator and turn it upside down: EZgGG — not quite a word, sorry.
- ➕ 99623 is a prime number. It cannot be divided by anything except 1 and itself. Its digits add up to 29, a total 1,296 other ZIP codes share.
- 💾In binary, the way a computer stores it:
11000010100100111 - 🏠 Its numerical neighbours: 99622 (Kwigillingok, AK, 461 mi away) and 99624 (Larsen Bay, AK, 306 mi away). Next door on paper, a road trip in real life.
- 🔄 Backwards, 99623 becomes 32699, which is not a ZIP code at all.
- 👥 19 other ZIP codes are made of exactly the same digits (29369, 29639, 29693, 29936, 32969, 39269, …). The farthest-flung twin is 96923 in Mangilao, GU, 4,595 miles away.
- 🧭 Farther north than 99% of all ZIP codes, and farther west than 99%.
- 🎯2,600 miles northwest of the geographic center of the Lower 48, near Lebanon, Kansas.
- 🌏 Dig straight through the Earth from 99623 and you would come out at 61.44°S, 30.08°E — 1,745 miles from Port-aux-Français, French Southern Territories, the nearest big city to that spot.
- ☀Longest day of the year: 19h 29m of daylight. Shortest: 5h 22m.
- 📏 At 258.6 square miles of land, 99623 is bigger than 94% of ZIP codes — room for about 196 Central Parks.
- Working out the sun…
- Checking the USGS…
Source: USGS.
People and housing
| Population | 23,424This ZIP23,424 |
|---|---|
| Households | 7,701This ZIP7,701 |
| Housing units | 9,116This ZIP9,116 |
| Median age | 34.9This ZIP34.9Alaska35.8US 38.9 |
| Median household income | $88,799This ZIP$88,799Alaska$92,788US $80,734 |
| Median home value | $326,000This ZIP$326,000Alaska$352,900US $332,700 |
| Median gross rent | $1,601This ZIP$1,601Alaska$1,419US $1,413 |
| Bachelor's degree or higher | 16.9%This ZIP16.9% |
| Mean commute | 38.6 minThis ZIP38.6 min |
| Population density | 90.6 / sq miThis ZIP90.6 / sq mi |
Business and tax activity
| Business establishments | 281This ZIP281 |
|---|---|
| Employees | 1,281This ZIP1,281 |
| Annual payroll | $66,173,000This ZIP$66,173,000 |
Land area
| Land area | 258.58 sq miThis ZIP258.58 sq mi |
|---|---|
| Water area | 8.44 sq miThis ZIP8.44 sq mi |
Other place names in 99623
Census places whose land this ZIP code overlaps. The Postal Service may accept other city names in an address, too.
ZIP codes near 99623
| ZIP | City | Distance |
|---|---|---|
99652 | Big Lake, AK | 5.5 mi |
99506 | Jber, AK | 12.2 mi |
99694 | Houston, AK | 12.9 mi |
99505 | Jber, AK | 13.9 mi |
99509 | Anchorage, AK | 15.3 mi |
99514 | Anchorage, AK | 15.3 mi |
99520 | Anchorage, AK | 15.3 mi |
99521 | Anchorage, AK | 15.3 mi |
99522 | Anchorage, AK | 15.3 mi |
99523 | Anchorage, AK | 15.3 mi |
Find every ZIP code within 10 miles of 99623 →
Questions about this ZIP code
Where is ZIP code 99623?
99623 is in Wasilla, Alaska, in Matanuska-Susitna Borough, part of the Anchorage, AK metropolitan area. Its published point location is 61.4393, -149.9227.
What county is 99623 in?
99623 lies in Matanuska-Susitna Borough.
What area code is 99623?
Wasilla uses area code 907, from NANPA's telephone records.
What time zone is 99623 in?
99623 uses America/Anchorage.
How many people live in 99623?
About 23,424 people live in ZIP code 99623, in 7,701 households, at 90.6 people per square mile. These are American Community Survey 5-year estimates for the ZIP Code Tabulation Area, not a headcount.
What is the median household income in 99623?
$88,799 a year, against $92,788 across Alaska.
What ZIP codes are near 99623?
The closest are 99652 (5.5 mi), 99506 (12.2 mi), 99694 (12.9 mi), 99505 (13.9 mi) and 99509 (15.3 mi).
Is 99623 a PO Box ZIP code?
99623 is a standard ZIP code. A normal ZIP code with street delivery.
Download or cite
Cite this page
zipcodes.pro. “99623 ZIP Code — Wasilla, Alaska (Matanuska-Susitna Borough).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/99623
Machine-readable version of these facts:
curl https://zipcodes.pro/zip/99623.jsonUnderlying data is public domain or openly licensed — sources, vintages and licences.