99623 ZIP Code, Wasilla, AK
99623 is a ZIP code in Wasilla, Alaska in Matanuska-Susitna Borough. It covers 259 square miles of land. The closest ZIP codes are 99652, 99506 and 99694. 23,424 people live here in 7,701 households, more than in 9 of every 10 Alaska ZIP codes. It is rural, with fewer than 100 people per square mile, and most homes are owner-occupied (82%). Median household income is $88,799, close to the Alaska median of $92,788; 41% of households have children under 18.
Quick facts
- Mailing city: Wasilla, AK
- County: Matanuska-Susitna County
- Land area: 259 sq mi
- Population: 23,424
- Median household income: $88,799
- Carrier routes: 2 (1,177 homes)
Key figures
| Measure | Value |
|---|---|
| Residents | 23,424 |
| Households | 7,701 |
| Median household income | $88,799 |
| Income per person | $36,771 |
| Median age | 34.9 |
| Homeowners | 82.0% |
| Median home value | $326,000 |
| Median rent | $1,601 |
| Bachelor's degree or higher | 16.9% |
| Average commute (minutes) | 38.6 |
| Households with kids under 18 | 40.8% |
| Moved in the past year | 11.6% |
| Below the poverty line | 11.2% |
| Broadband internet | 92.2% |
| Speak a non-English language at home | 6.4% |
Household income
| % of households | Value |
|---|---|
| <$10K | 3.4% |
| $10–15K | 2.1% |
| $15–25K | 7.7% |
| $25–35K | 5.6% |
| $35–50K | 7.8% |
| $50–75K | 12.2% |
| $75–100K | 16.3% |
| $100–150K | 20.8% |
| $150–200K | 12.9% |
| $200K+ | 11.2% |
Age
| % of all residents | Value |
|---|---|
| <10 | 15.1% |
| 10–19 | 14.9% |
| 20–24 | 5.0% |
| 25–34 | 15.1% |
| 35–44 | 15.0% |
| 45–54 | 12.3% |
| 55–64 | 11.4% |
| 65–74 | 7.7% |
| 75+ | 3.5% |
Tenure
| % of housing units | Value |
|---|---|
| Owned, with mortgage | 46.7% |
| Owned outright | 22.7% |
| Rented | 15.2% |
| Vacant | 15.5% |
Type of building
| % of housing units | Value |
|---|---|
| Detached house | 85.9% |
| Townhome | 1.3% |
| 2–4 units | 7.7% |
| 5–19 units | 0.8% |
| 20+ units | 0.2% |
| Mobile / other | 4.0% |
Businesses in 99623
281 business establishments with 1,281 employees (ZIP Codes Business Patterns 2023).
- Construction: 88
- Health Care and Social Assistance: 32
- Administrative and Support and Waste Management and Remediation Services: 25
- Professional, Scientific, and Technical Services: 23
- Other Services (except Public Administration): 20
- Accommodation and Food Services: 19
- Transportation and Warehousing: 17
- Retail Trade: 15
EDDM carrier routes
99623 has 2 USPS carrier routes with 1,177 residential and 8 business mailboxes. Open the EDDM route map.
Carrier routes in 99623
99623 has 2 USPS carrier routes (2 highway contract (H)) with 1,177 residential and 8 business mailboxes. Routes range from 562 homes (H045) to 615 homes (H038); the median route has 589 homes. The Census counted 7,701 households in 99623 (2020–2024 average); USPS counts current mailboxes, including new and vacant homes.
| Homes per route | Routes |
|---|---|
| 1–249 | 0 |
| 250–499 | 0 |
| 500–749 | 2 |
| 750–999 | 0 |
| 1,000–1,499 | 0 |
| 1,500+ | 0 |
Best routes in 99623 for…
Most businesses
For B2B offers: office supplies, cleaning, IT, catering and commercial services.
- Route H038 — USPS business mailboxes 4, 615 homes
- Route H045 — USPS business mailboxes 4, 562 homes
Select these 2 routes on the route map
Every carrier route in 99623
| Route | Type | Homes | Businesses | Est. median income | Est. owners | Est. families with kids | Est. moved in past year |
|---|---|---|---|---|---|---|---|
| H038 | Highway contract | 615 | 4 | $76,083 | — | — | — |
| H045 | Highway contract | 562 | 4 | $63,116 | — | — | — |
Income, owners, families and movers are estimates for each route (how we estimate them); mailbox counts are current USPS figures. Open 99623 on the EDDM route map.
How route demographics are estimated
Mailbox counts come from USPS; demographics are estimates
The number of homes and businesses on each carrier route is the current USPS EDDM count. The Census Bureau does not publish figures for carrier routes, so income, homeownership, ages, families, movers and housing age on a route are EDDM2GO estimates built from Census block groups (neighborhood areas of roughly 600 to 3,000 people).
How a route gets its figures: the block-group length-share method
We trace each route's streets every 25 meters and record which block group each stretch falls in. The route's homes are spread along its streets in proportion to length, so a route with 60% of its street length in one block group is assumed to have 60% of its homes there. Each block group then contributes its Census counts in proportion to the share of its housing units that sit on the route (capped at the whole block group). Medians are recalculated from the combined income, home-value and age brackets, the way the Census Bureau computes them, not averaged.
Margins of error
Census survey figures carry a margin of error at 90% confidence; we carry it through the calculation and show it as ±. Our margins treat the route-to-block-group split as exact, so the real uncertainty is larger. Routes with fewer than 100 estimated households, large margins, or streets we could not place are flagged.
Different years
USPS mailbox counts are current. Census figures are 5-year averages for 2020–2024, so a new subdivision may have more homes on the route today than the Census counted. Use the route figures to compare routes with each other, not as an exact head count.
Why some routes show identical figures
Two routes that run through the same block group get the same percentages and medians, because the Census publishes one set of figures for the whole block group. Their mailbox counts still differ, and those are exact.
Route and mailbox counts: USPS EDDM route data. Route demographics: EDDM2GO estimates from U.S. Census Bureau American Community Survey 5-year block-group data (2020–2024) and 2024 cartographic block-group boundaries. This product uses the Census Bureau Data API but is not endorsed or certified by the Census Bureau.
Nearby ZIP codes
- 99652 — Big Lake CDP, AK (5.5 mi)
- 99506 — Anchorage municipality, AK (12.2 mi)
- 99694 — Houston city, AK (12.9 mi)
- 99505 — Anchorage municipality, AK (13.9 mi)
- 99501 — Anchorage municipality, AK (15.3 mi)
- 99513 — Anchorage municipality, AK (15.6 mi)
- 99508 — Anchorage municipality, AK (16.8 mi)
- 99517 — Anchorage municipality, AK (17.2 mi)
Areas that include 99623
- Knik-Fairview, AK ZIP codes — 2 ZIP codes
- Wasilla, AK ZIP codes — 2 ZIP codes
- Meadow Lakes, AK ZIP codes — 3 ZIP codes
- Point MacKenzie, AK ZIP codes — 1 ZIP code
- Matanuska-Susitna County ZIP codes — 12 ZIP codes
- Alaska ZIP code data
Where it ranks
- No. 4 of 9: highest median household income in Matanuska-Susitna Borough
- No. 3 of 9: highest median home value in Matanuska-Susitna Borough
- No. 3 of 9: highest share of owner-occupied homes in Matanuska-Susitna Borough
- No. 1 of 9: highest share of households with children in Matanuska-Susitna Borough
- No. 1 of 9: lowest median age in Matanuska-Susitna Borough
Mail every home in 99623
Route counts on this page price as Full Service 6.5 × 9 postcards: we print, bundle by carrier route and hand the mailing to USPS. Prefer to take it to the Post Office yourself? Print only costs less and you pay postage at drop-off.
EDDM guides
ZIP code statistics describe the Census ZIP Code Tabulation Area (ZCTA) 99623, which approximates the USPS ZIP code area. Census figures: American Community Survey 5-year estimates, 2020–2024.
Frequently asked questions
- What city is 99623 in?
- 99623 is a Wasilla, AK mailing address. By land area, 63% lies inside Point MacKenzie, 19% lies inside Meadow Lakes and 17% lies inside Knik-Fairview.
- What county is 99623 in?
- 99623 is in Matanuska-Susitna Borough.
- What is the population of 99623?
- About 23,424 people (±1,139), according to the Census Bureau's American Community Survey 5-year estimates for 2020–2024. The 2020 Census counted 23,878.
- What is the median household income in 99623?
- $88,799 (±$6,578), compared with $92,788 for Alaska as a whole. Half the households in the ZIP code earn more and half earn less.
- How many carrier routes and mailboxes are in 99623?
- 2 USPS carrier routes with 1,177 residential and 8 business mailboxes (1,185 in all), from the route data stored by EDDM2GO. An EDDM mailing can target any combination of these routes.
- What ZIP codes are near 99623?
- The closest, measured center to center: 99652 (5.5 mi, Big Lake), 99506 (12.2 mi, Anchorage municipality, AK), 99694 (12.9 mi, Houston), 99505 (13.9 mi, Anchorage municipality, AK), 99501 (15.3 mi, Anchorage municipality, AK) and 99513 (15.6 mi, Anchorage municipality, AK).
This product uses the Census Bureau Data API but is not endorsed or certified by the Census Bureau.