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The Waipio Acres handbook

Living in Waipio Acres, HI: what to set up and who to call

Waipio Acres has no town government of its own, so Honolulu County runs its elections and most services, and its children attend Hawaii Department of Education. Mililani Public Library (Hawaii State Public Library System), 1.3 miles away, is the closest library to Waipio Acres.

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

I’m new in town

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

PowerHawaiian Electric Coinvestor-owned utility · 40.5¢/kWhMore →Internet3 providers99% of addresses get 100/20 MbpsMore →Trash & dumpNot on file yetWe don’t have Waipio Acres’ trash rules yetMore →SchoolHawaii Department of EducationWhich school depends on grade and addressMore →Register to voteOnlineRules from vote.govMore →ZIP code96789Where people live, not P.O. boxesMore →
Home services

Power, water and internet

Who to call to start service at a new address in Waipio Acres.

Electricity

Power comes from Hawaiian Electric Co

Hawaiian Electric Co (Hawaiian Electric Co Inc), an investor-owned utility, serves all of Waipio Acres. Its homes paid an average of 40.5¢ per kWh in 2025, about $190 a month (its average across Hawaii).

Start or move service: hawaiianelectric.com · (808) 548-7311

Service territory: HIFLD Electric Retail Service Territories (map dated Aug 2023). Prices and customers: EIA-861, 2025.

Internet

3 home internet providers serve Waipio Acres

99% of 773 addresses can get 100/20 Mbps; 59% can get fiber.

ProviderTechnologyAddressesFastest (Mbps)
SpectrumCable, Fiber100%1,000/1,000
Hawaiian TelcomFiber, DSL90%2,850/2,850
T-MobileFixed wireless16%25/3

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

Trash & recycling

We don’t have Waipio Acres’ trash rules yet

Pickup rules, the dump and recycling in Waipio Acres.

Trash, recycling and bulk pickupNot on fileWaipio Acres 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.

Waipio Acres kids go to
PK–5178 elementary schoolsDepends on your address
6–854 middle schoolsDepends on your address
9–1245 high schoolsDepends on your address

Waipio Acres is in Hawaii Department of Education.

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

Waipio Acres is unincorporated, so Honolulu County is the local government.

Local governmentHonolulu CountyWaipio Acres is a census-designated place: no town hall of its ownCensus
Who runs elections hereHonolulu County ClerkElections here are run by Honolulu County (county election office). 530 S King St, Rm 100, Honolulu, HI 96813-3077 · (808) 768-3800 · [email protected]FVAP, Jul 2019
Register to voteOnlineIn Hawaii you can register online up to and including Election Day, in person up to and including Election Day, or by mail (postmarked 10 days before).vote.govCheck your registration and polling placeolvr.hawaii.govThe state’s voter lookup

Election office: FVAP local election office directory, updated Jul 2019; jurisdictions: EAC EAVS 2024. Registration rules and links: vote.gov, updated Nov 18, 2024.

ZIP codes & area codes

Waipio Acres is in ZIP code 96789

ZIP codes where Waipio Acres residents live, with the share of the town in each.

ZIPPost office nameShare of Waipio AcresZIP’s residents in Waipio Acres
96789Mililani, HI100%10%
Area code808Wikidata

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 roomPali Momi Medical Center7.8 miles awayGet a library cardHawaii State Public Library SystemNearest branch: Mililani Public Library, 95-450 Makaimoimo St. · (808) 627-7470

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

Questions about living in Waipio Acres

Who provides electricity in Waipio Acres?

Hawaiian Electric Co (Hawaiian Electric Co Inc), an investor-owned utility. Its homes paid about 40.5¢ per kWh in 2025 (EIA).

What internet providers serve Waipio Acres?

Spectrum, Hawaiian Telcom, T-Mobile (FCC, as of December 2025).

What ZIP codes are in Waipio Acres?

96789. Census 2020 ZIP Code Tabulation Areas.

What school district is Waipio Acres in?

Hawaii Department of Education.

How do I register to vote in Waipio Acres?

In Hawaii you can register online up to and including Election Day, in person up to and including Election Day, or by mail (postmarked 10 days before). Elections here are run by the Honolulu County Clerk. Check your registration at olvr.hawaii.gov.

Sources & dates

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

  • Power: HIFLD Electric Retail Service Territories (map Aug 2023); EIA-861 final 2025.
  • 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 Nov 18, 2024 (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.