Boundary Atlas

ZIP code 00685: San Sebastián, PR

ZIP code 00685 is in San Sebastián (21% of residents), Juncal (2.5%) and Hato Arriba (1.9%), in San Sebastián Municipio (97%), Isabela Municipio (2.0%) and Moca Municipio (1.5%), Puerto Rico. 75% of its residents live outside city limits. It is in Puerto Rico's at-large congressional district. Its state senate district is State Senate District 4; its state house districts are State House District 16 (98%), State House District 17 (1.2%) and State House District 18 (0.3%).

40,294residents (2020 Census)
78.7 sq miland area
3cities and towns
1congressional district
22voting precincts

See it on the mapAll of Puerto Rico

City and county

City or townShare of ZIP residents
San Sebastián21%
Juncal2.5%
Hato Arriba1.9%

CountyShare of ZIP residents
San Sebastián Municipio97%
Isabela Municipio2.0%
Moca Municipio1.5%

Town or county subdivisionShare of ZIP residents
Pozas barrio8.7%
Culebrinas barrio8.4%
Hoya Mala barrio8.3%
Salto barrio7.5%
Guatemala barrio6.3%
Calabazas barrio6.3%
Piedras Blancas barrio5.6%
Sonador barrio4.7%
Bahomamey barrio4.5%
Hato Arriba barrio4.5%
Robles barrio4.4%
Juncal barrio4.3%
Aibonito barrio3.4%
San Sebastián barrio-pueblo3.1%
Cibao barrio2.5%
Eneas barrio2.3%
Perchas 2 barrio2.1%
Alto Sano barrio2.0%
Perchas 1 barrio1.9%
Guacio barrio1.5%
Guajataca barrio1.4%
Mirabales barrio1.4%
Planas barrio1.1%
Rocha barrio1.1%
Cidral barrio1.0%
Galateo Alto barrio0.5%
Magos barrio0.5%
Plata barrio0.3%
Arenales Altos barrio0.3%
Capá barrio0.1%

Congressional district

Congressional districtShare of ZIP residents
Puerto Rico's at-large congressional district (PR-AL)100%

Elected officials

OfficeMemberContactShare of residents
Resident Commissioner (PR-AL)Pablo José Hernández (D)202-225-2615100%
State Senator (State Senate District 4)Jeison Rosa (Partido Nuevo Progresista)100%
State Senator (State Senate District 4)Karen Román (Partido Nuevo Progresista)100%
State Representative (State House District 16)Rey Figueroa (Partido Popular Democrático)98%
State Representative (State House District 17)Wilson Román (Partido Nuevo Progresista)1.2%
State Representative (State House District 18)Odalys González (Partido Nuevo Progresista)0.3%

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 ZIP residents
State Senate District 4100%

State house districtShare of ZIP residents
State House District 1698%
State House District 171.2%
State House District 180.3%

Voting precincts

22 voting precincts overlap ZIP 00685. Map them, with each precinct's share of the ZIP's residents.

Get this in your AI agent

Your agent can get these cities, counties, districts and precincts with their shares, and their GeoJSON boundaries, from Boundary Atlas. Add https://atlas-production-d344.up.railway.app/mcp to Claude, ChatGPT, Cursor or Codex (free, no key; how), then:

related_geographies(id="us:zcta:00685")

ZIP 00685 here is the Census Bureau's ZIP Code Tabulation Area, which approximates the USPS ZIP Code; PO-box-only ZIPs have none. Districts are the maps in force for the November 3, 2026 election.