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The Knik River handbook

Living in Knik River, AK: what to set up and who to call

Knik River has no town government of its own, so Matanuska-Susitna Borough runs its elections and most services, and its children attend Matanuska-Susitna Borough School District. Mat-Su Regional Medical Center, 10.8 miles away, is the nearest emergency room.

Who supplies the water?Which school will my kid attend?How do I register to vote?ZIP codes
Knik River has no town government. It’s a census-designated place in Matanuska-Susitna Borough, so the county and regional agencies provide most services. This page answers what we can; the same answers appear on Knik River’s town page under “Getting set up”.

I’m new in town

What to set up in Knik River, and who provides it. Tap an answer for the details and where they come from.

WaterHeritage Park0 health-based violations in 5 years · EPAMore →Internet1 providers37% of addresses get 100/20 MbpsMore →Trash & dumpNot on file yetWe don’t have Knik River’s trash rules yetMore →SchoolMatanuska-Susitna Borough School DistrictWhich school depends on grade and addressMore →Register to voteOnlineRules from vote.govMore →ZIP code99645Where people live, not P.O. boxesMore →
Home services

Power, water and internet

Who to call to start service at a new address in Knik River.

Drinking water · reported to EPA

Water comes from Heritage Park

Heritage Park supplies Knik River: about 5% of residents live in its service area. About 95% of homes are outside any mapped community water system, most likely on private wells, which EPA doesn’t regulate. It draws ground water and serves 8 people in all.

No health-based violations reported to EPA in the five years to October 2026, like 78% of the 11,392 systems serving <=100 people.

Lead, 90th percentile0.8 ppb
015 ppb action level20

The latest lead result on file, the 90th percentile of homes sampled in Jan 2025–Dec 2027, was 0.8 ppb, below the 15 ppb action level that applied. That’s higher than 52% of similar systems’ latest results.

The system’s full record: EPA ECHO report

EPA SDWIS via Envirofacts (violations pulled Oct 9, 2026) and ECHO (lead samples, 2026Q3); service area: EPA Community Water System Service Area Boundaries v3.0. Violations are counted by the start of their compliance period. AK2227212.

Internet

1 home internet providers serve Knik River

37% of 408 addresses can get 100/20 Mbps; 21% can get fiber.

ProviderTechnologyAddressesFastest (Mbps)
Matanuska Telecom AssociationDSL, Fiber91%1,000/200

FCC National Broadband Map, as of December 2025. Availability as providers report it, not speeds people get.

Trash & recycling

We don’t have Knik River’s trash rules yet

Pickup rules, the dump and recycling in Knik River.

Trash, recycling and bulk pickupNot on fileKnik River has no town government of its own, so look for trash and recycling rules on the county’s site.
Schools

Where your child goes to school

Public school districts and the school path by grade.

Knik River kids go to
PK–526 elementary schoolsDepends on your address
6–1210 schoolsDepends on your address

Knik River is in Matanuska-Susitna Borough School District.

Test scores and every school: see Schools →

U.S. Department of Education, NCES Common Core of Data, 2024–25. Enrollment rules and registration are the district’s.

Government & voting

No town hall: the county runs things

Knik River is unincorporated, so Matanuska-Susitna Borough is the local government.

Local governmentMatanuska-Susitna BoroughKnik River is a census-designated place: no town hall of its ownCensus
Who runs elections hereAbsentee and Petition OfficeElections here are run by State of Alaska (state election office). 3651 Penland Pkwy Floor 2, Anchorage, AK 99508 · (907) 270-2700FVAP, Jun 2025
Register to voteOnlineIn Alaska you can register online until 30 days before Election Day, in person until 30 days before Election Day, or by mail (received 30 days before).vote.govCheck your registration and polling placemyvoterportal.alaska.govThe state’s voter lookup

Election office: FVAP local election office directory, updated Jun 2025; jurisdictions: EAC EAVS 2024. Registration rules and links: vote.gov, updated Sep 30, 2026.

ZIP codes & area codes

Knik River is in ZIP code 99645

ZIP codes where Knik River residents live, with the share of the town in each.

ZIPPost office nameShare of Knik RiverZIP’s residents in Knik River
99645Palmer, AK100%3%

Census 2020 ZIP Code Tabulation Areas, by census block; post office names: GeoNames (CC BY 4.0). ZIPs created since 2020 are missing.

Everyday places

Getting around, the ER and the library

One line each; the subject pages have the rest.

Nearest emergency roomMat-Su Regional Medical Center10.8 miles awayGet a library cardPalmer Public Library137 E Arctic Ave · (907) 761-1371

ER: CMS hospital data. Library: IMLS Public Libraries Survey, FY2024.

Questions about living in Knik River

Who supplies Knik River’s drinking water, and has it had violations?

Heritage Park (EPA ID AK2227212). It reported no health-based violations to EPA in the five years to October 2026; 78% of systems its size had none. Its latest lead 90th percentile was 0.8 ppb (Jan 2025–Dec 2027), against a 15 ppb action level.

What internet providers serve Knik River?

Matanuska Telecom Association (FCC, as of December 2025).

What ZIP codes are in Knik River?

99645. Census 2020 ZIP Code Tabulation Areas.

What school district is Knik River in?

Matanuska-Susitna Borough School District.

How do I register to vote in Knik River?

In Alaska you can register online until 30 days before Election Day, in person until 30 days before Election Day, or by mail (received 30 days before). Elections here are run by the Absentee and Petition Office. Check your registration at myvoterportal.alaska.gov.

Sources & dates

Every answer above names its source. Here they are with their dates.

  • Water: EPA SDWIS (Envirofacts, pulled Oct 9, 2026), ECHO SDWA 2026Q3, EPA CWS Service Area Boundaries v3.0.
  • Trash: OpenStreetMap, Geofabrik extract of Oct 9, 2026. © OpenStreetMap contributors (ODbL).
  • ZIP codes: Census 2020 ZCTA relationship files; GeoNames postal codes (CC BY 4.0).
  • Schools: NCES Common Core of Data, 2024–25.
  • Registration: vote.gov, updated Sep 30, 2026 (read Oct 10, 2026). Official sites and area codes: Wikidata.
  • Election office: FVAP local election office directory (fetched Oct 10, 2026; each record dated), EAC EAVS 2024 jurisdictions; registration and lookup links from vote.gov’s state data, checked Oct 10, 2026.
  • Internet: FCC National Broadband Map, as of December 2025.