Riley's Tavern · Photo: Renelibrary · CC BY-SA 4.0Living in Redwood, TX: what to set up and who to call
Redwood has no town government of its own, so Guadalupe County runs its elections and most services, and its children attend San Marcos Consolidated Independent School District. Power in Redwood comes from City of San Marcos, a municipal utility rather than a private company.
I’m new in town
What to set up in Redwood, and who provides it. Tap an answer for the details and where they come from.
Power, water and internet
Who to call to start service at a new address in Redwood.
Power comes from City of San Marcos
City of San Marcos (City of San Marcos - (TX)), a municipal utility, serves 70.7% of Redwood residents. Its homes paid an average of 12.7¢ per kWh in 2025, about $116 a month (its average across Texas).
Start or move service: ci.san-marcos.tx.us · (512) 393-8309
Service territory: HIFLD Electric Retail Service Territories (map dated Aug 2023). Prices and customers: EIA-861, 2025.
Water comes from Crystal Clear SUD
Crystal Clear SUD supplies almost all of Redwood. It buys treated surface water (EPA lists Crwa Hays Caldwell WTP and Alliance Regional Water Authority 1b and Springs Hill SUD and Crwa Lake Dunlap WTP and Crwa Wells Ranch as sellers) and serves 20,766 people in all.
No health-based violations reported to EPA in the five years to October 2026, like 83% of the 3,525 systems serving 10,001–50,000 people.
The latest lead result on file, the 90th percentile of homes sampled in Jan–Jun 2025, was 1.6 ppb, below the 15 ppb action level that applied. That’s higher than 59% of similar systems’ latest results.
The system’s full record: EPA ECHO report
EPA SDWIS via Envirofacts (violations pulled Oct 9, 2026) and ECHO (lead samples, 2026Q3); service area: EPA Community Water System Service Area Boundaries v3.0. Violations are counted by the start of their compliance period. TX0940015.
5 home internet providers serve Redwood
100% of 1,250 addresses can get 100/20 Mbps; 0% can get fiber.
| Provider | Technology | Addresses | Fastest (Mbps) |
|---|---|---|---|
| Spectrum | Cable | 97% | 1,000/1,000 |
| VTX1 | Fixed wireless | 100% | 400/50 |
| Verizon | Fixed wireless | 77% | 300/20 |
| Guadalupe Valley Electric Coop | Fixed wireless | 20% | 100/20 |
| T-Mobile | Fixed wireless | 10% | 100/20 |
FCC National Broadband Map, as of December 2025. Availability as providers report it, not speeds people get.
We don’t have Redwood’s trash rules yet
Pickup rules, the dump and recycling in Redwood.
Where your child goes to school
Public school districts and the school path by grade.
Redwood is in San Marcos Consolidated Independent School District.
DSchool gradeSee Schools →U.S. Department of Education, NCES Common Core of Data, 2024–25. Enrollment rules and registration are the district’s.
No town hall: the county runs things
Redwood is unincorporated, so Guadalupe County is the local government.
Election office: FVAP local election office directory, updated Jun 2025; jurisdictions: EAC EAVS 2024. Registration rules and links: vote.gov, updated Nov 18, 2024.
Redwood is in ZIP code 78666
ZIP codes where Redwood residents live, with the share of the town in each.
| ZIP | Post office name | Share of Redwood | ZIP’s residents in Redwood |
|---|---|---|---|
| 78666 | San Marcos, TX | 100% | 5% |
Census 2020 ZIP Code Tabulation Areas, by census block; post office names: GeoNames (CC BY 4.0). ZIPs created since 2020 are missing.
Getting around, the ER and the library
One line each; the subject pages have the rest.
ER: CMS hospital data. Library: IMLS Public Libraries Survey, FY2024.
Questions about living in Redwood
Who supplies Redwood’s drinking water, and has it had violations?
Crystal Clear SUD (EPA ID TX0940015). It reported no health-based violations to EPA in the five years to October 2026; 83% of systems its size had none. Its latest lead 90th percentile was 1.6 ppb (Jan–Jun 2025), against a 15 ppb action level.
Who provides electricity in Redwood?
City of San Marcos (City of San Marcos - (TX)), a municipal utility. Its homes paid about 12.7¢ per kWh in 2025 (EIA).
What internet providers serve Redwood?
Spectrum, VTX1, Verizon, Guadalupe Valley Electric Coop, T-Mobile (FCC, as of December 2025).
What ZIP codes are in Redwood?
78666. Census 2020 ZIP Code Tabulation Areas.
What school district is Redwood in?
San Marcos Consolidated Independent School District.
How do I register to vote in Redwood?
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 Guadalupe 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.
- Water: EPA SDWIS (Envirofacts, pulled Oct 9, 2026), ECHO SDWA 2026Q3, EPA CWS Service Area Boundaries v3.0.
- 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.