ZIP code 78840: Del Rio, TX

ZIP code 78840 is in Del Rio (74% of residents), Cienegas Terrace (6.4%), Val Verde Park (5.0%) and Laughlin AFB (3.2%), in Val Verde County, Texas. 12% of its residents live outside city limits. It is in Texas's 23rd congressional district. Its state senate district is State Senate District 19; its state house district is State House District 74.

47,147residents (2020 Census)

1,046.3 sq miland area

7cities and towns

1congressional district

16voting precincts

See it on the map All of Texas

City and county

City or town	Share of ZIP residents
Del Rio	74%
Cienegas Terrace	6.4%
Val Verde Park	5.0%
Laughlin AFB	3.2%
Lake View	0.4%
Box Canyon	<0.1%
Amistad	<0.1%

County	Share of ZIP residents
Val Verde County	100%

Town or county subdivision	Share of ZIP residents
Del Rio CCD	99%
Del Rio Northeast CCD	0.5%
Del Rio Northwest CCD	0.3%

Congressional district

Congressional district	Share of ZIP residents
Texas's 23rd congressional district (TX-23)	100%

Elected officials

Office	Member	Contact	Share of residents
U.S. Senator	John Cornyn (R)	202-224-2934 · contact form	statewide
U.S. Senator	Ted Cruz (R)	202-224-5922 · contact form	statewide
State Senator (State Senate District 19)	Roland Gutierrez (Democratic)	830-278-1234	100%
State Representative (State House District 74)	Eddie Morales (Democratic)		100%
U.S. Representative (TX-23)	Vacant

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

Del Rio website: https://www.cityofdelrio.com/
Del Rio laws: search for the Del Rio, Texas code of ordinances
Cienegas Terrace laws: search for the Cienegas Terrace, Texas code of ordinances
Val Verde Park laws: search for the Val Verde Park, Texas code of ordinances
Val Verde County website: https://www.valverdecounty.texas.gov/
Val Verde County laws: search for the Val Verde County, Texas code of ordinances

State legislative districts

State senate district	Share of ZIP residents
State Senate District 19	100%

State house district	Share of ZIP residents
State House District 74	100%

Voting precincts

16 voting precincts overlap ZIP 78840. Map them, with each precinct's share of the ZIP's residents.

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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:

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ZIP 78840 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.