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The Delmita handbook

Living in Delmita, TX: what to set up and who to call

Delmita has no town government of its own, so Starr County runs its elections and most services, and its children attend San Isidro Independent School District. Power in Delmita comes from Magic Valley Electric Coop, a cooperative utility rather than a private company.

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

I’m new in town

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

PowerMagic Valley Electric Coopcooperative utility · 10.5¢/kWhMore →Internet4 providers100% of addresses get 100/20 MbpsMore →Trash & dumpNot on file yetWe don’t have Delmita’s trash rules yetMore →SchoolSan Isidro Independent School DistrictWhich school depends on grade and addressMore →Register to voteIn personRules from vote.govMore →ZIP codes78536, 78591Where people live, not P.O. boxesMore →
Home services

Power, water and internet

Who to call to start service at a new address in Delmita.

Electricity

Power comes from Magic Valley Electric Coop

Magic Valley Electric Coop (Magic Valley Electric Coop Inc), a cooperative utility, serves all of Delmita. Its homes paid an average of 10.5¢ per kWh in 2025, about $140 a month (its average across Texas).

Start or move service: magicvalley.coop · (866) 225-5683

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

Internet

4 home internet providers serve Delmita

100% of 86 addresses can get 100/20 Mbps; 93% can get fiber.

ProviderTechnologyAddressesFastest (Mbps)
Valley Telephone CooperativeFixed wireless, Fiber100%1,000/1,000
AT&TFixed wireless10%25/3
T-MobileFixed wireless9%100/20
VerizonFixed wireless3%25/6

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

Trash & recycling

We don’t have Delmita’s trash rules yet

Pickup rules, the dump and recycling in Delmita.

Trash, recycling and bulk pickupNot on fileDelmita 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.

Delmita kids go to
PK–8San Isidro Elin San Isidro
9–12San Isidro H Sin San Isidro

Delmita is in San Isidro Independent School District.

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

Delmita is unincorporated, so Starr County is the local government.

Local governmentStarr CountyDelmita is a census-designated place: no town hall of its ownCensus
Who runs elections hereStarr County Early Voting ClerkElections here are run by Starr County (county election office). 100 N. FM 3167, Ste. 218, Rio Grande City, TX 78582 · (956) 716-4800FVAP, May 2022
Register to voteIn personTexas has no online registration; you can register in person until 30 days before Election Day or by mail (postmarked 30 days before).vote.govCheck your registration and polling placeteamrv-mvp.sos.texas.govThe state’s voter lookup

Election office: FVAP local election office directory, updated May 2022; jurisdictions: EAC EAVS 2024. Registration rules and links: vote.gov, updated Nov 18, 2024.

ZIP codes & area codes

Delmita spans 2 ZIP codes

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

ZIPPost office nameShare of DelmitaZIP’s residents in Delmita
78536Delmita, TX66%38%
78591Santa Elena, TX34%18%

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 roomDriscoll Children's Hospital Rio Grande Valley31.6 miles awayGet a library cardLa Joya Municipal Library201 Palm Shores Blvd · (956) 581-4533

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

Questions about living in Delmita

Who provides electricity in Delmita?

Magic Valley Electric Coop (Magic Valley Electric Coop Inc), a cooperative utility. Its homes paid about 10.5¢ per kWh in 2025 (EIA).

What internet providers serve Delmita?

Valley Telephone Cooperative, AT&T, T-Mobile, Verizon (FCC, as of December 2025).

What ZIP codes are in Delmita?

78536 (66%), 78591 (34%), by share of residents. Census 2020 ZIP Code Tabulation Areas.

What school district is Delmita in?

San Isidro Independent School District.

How do I register to vote in Delmita?

Texas has no online registration; you can register in person until 30 days before Election Day or by mail (postmarked 30 days before). Elections here are run by the Starr County Early Voting Clerk. Check your registration at teamrv-mvp.sos.texas.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.