Boundary Atlas

Kapolei, Hawaii

Kapolei is a Census-designated place (an unincorporated community) in Honolulu County, Hawaii, with 21,411 residents in 2020. It is in Hawaii's 1st congressional district. It spans 2 state house districts. Its state senate district is State Senate District 21.

21,411residents (2020 Census)
4.4 sq miland area
1ZIP codes
1congressional district

County

CountyShare of residents
Honolulu County100%

Congressional district

Congressional districtShare of residents
Hawaii's 1st congressional district (HI-01)100%

Elected officials

OfficeMemberContactShare of residents
U.S. Representative (HI-01)Ed Case (D)202-225-2726100%
U.S. SenatorBrian Schatz (D)202-224-3934 · contact formstatewide
U.S. SenatorMazie K. Hirono (D)202-224-6361 · contact formstatewide
State Senator (State Senate District 21)Mike Gabbard (Democratic)100%
State Representative (State House District 42)Diamond Garcia (R)58%
State Representative (State House District 43)Kanani Souza (R)42%

Officials serving now (members of Congress until January 3, 2027). Sources: State legislators: Open States (public domain); Members of Congress: the @unitedstates project, congress-legislators (CC0).

Local government

State legislative districts

State senate districtShare of residents
State Senate District 21100%

State house districtShare of residents
State House District 4258%
State House District 4342%

ZIP codes

Percentages mark ZIPs only partly in Kapolei: the share of that ZIP's residents living in it.

Get this in your AI agent

Your agent can get Kapolei's counties and districts with shares, its ZIP codes (level='zcta'), and its boundary as GeoJSON (get_boundaries). Add https://boundarymcp.com/mcp to Claude, ChatGPT, Cursor or Codex (free, no key; how), then:

related_geographies(id="us:place:1530300")

Kapolei here is the Census Bureau's place boundary as of January 1, 2025 (a Census-designated place, which has no municipal government). Shares are of 2020 Census population. Districts are the maps in force for the November 3, 2026 election.