Boundary Atlas

ZIP code 78582: Rio Grande City, TX

ZIP code 78582 is in Rio Grande City (35% of residents), Las Lomas (7.1%), Mikes (2.2%), East Alto Bonito (2.1%), Garza-Salinas II (1.5%), La Puerta (1.5%), West Alto Bonito (1.4%), Valle Vista (1.3%), B and E (1.1%) and El Chaparral (1.1%), in Starr County, Texas. 45% of its residents live outside city limits. It is in Texas's 28th congressional district. Its state senate district is State Senate District 21; its state house district is State House District 31.

43,253residents (2020 Census)
565.3 sq miland area
72cities and towns
1congressional district
11voting precincts

See it on the mapAll of Texas

City and county

City or townShare of ZIP residents
Rio Grande City35%
Las Lomas7.1%
Mikes2.2%
East Alto Bonito2.1%
Garza-Salinas II1.5%
La Puerta1.5%
West Alto Bonito1.4%
Valle Vista1.3%
B and E1.1%
El Chaparral1.1%
Mi Ranchito Estate0.9%
El Refugio0.9%
La Paloma Ranchettes0.8%
Camargito0.8%
Alto Bonito Heights0.7%
Los Ebanos0.7%
Los Barreras0.6%
Olmito and Olmito0.6%
El Cenizo0.6%
Santa Rosa0.6%
El Rancho Vela0.6%
Los Alvarez0.6%
Palo Blanco0.5%
Rancho Viejo0.5%
El Quiote0.5%
El Castillo0.5%
La Esperanza0.5%
Ranchitos del Norte0.5%
Manuel Garcia0.5%
Eugenio Saenz0.4%
La Escondida0.4%
La Victoria0.4%
Airport Heights0.4%
Chaparrito0.3%
La Casita0.3%
E. Lopez0.3%
Miguel Barrera0.3%
Nina0.3%
Barrera0.3%
Hilltop0.3%
Sammy Martinez0.3%
Campo Verde0.3%
Villarreal0.3%
El Socio0.2%
Flor del Rio0.2%
Loma Linda West0.2%
Buena Vista0.2%
Valle Hermoso0.2%
La Rosita0.2%
Longoria0.2%
Amada Acres0.2%
Pablo Pena0.2%
Zarate0.2%
La Chuparosa0.2%
Santa Cruz0.2%
Gutierrez0.2%
Casa Blanca0.1%
Loma Linda East0.1%
Manuel Garcia II0.1%
Rivereno0.1%
La Carla0.1%
El Brazil0.1%
El Mesquite0.1%
Olivia Lopez de Gutierrez0.1%
San Fernando0.1%
Martinez0.1%
Benjamin Perez<0.1%
Narciso Pena<0.1%
Tierra Dorada<0.1%
Anacua<0.1%
Fernando Salinas<0.1%
Santel<0.1%

CountyShare of ZIP residents
Starr County100%

Town or county subdivisionShare of ZIP residents
Rio Grande City CCD77%
La Grulla CCD23%
Roma-Los Saenz CCD0.4%

Congressional district

Congressional districtShare of ZIP residents
Texas's 28th congressional district (TX-28)100%

Elected officials

OfficeMemberContactShare of residents
U.S. Representative (TX-28)Henry Cuellar (D)202-225-1640100%
U.S. SenatorJohn Cornyn (R)202-224-2934 · contact formstatewide
U.S. SenatorTed Cruz (R)202-224-5922 · contact formstatewide
State Senator (State Senate District 21)Judith Zaffirini (Democratic)956-722-2293100%
State Representative (State House District 31)Ryan Guillen (R)100%

Elected in 2024 under TX's previous congressional map; this district's lines changed for the 120th Congress (seated January 3, 2027).

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 21100%

State house districtShare of ZIP residents
State House District 31100%

Voting precincts

11 voting precincts overlap ZIP 78582. Map them, with each precinct's share of the ZIP's residents.

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ZIP 78582 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.