Living in Oak Grove, MS: what to set up and who to call
Oak Grove has no town government of its own, so Lamar County runs its elections and most services, and its children attend Lamar County School District. The closest ER is Merit Health Wesley, 3.9 miles away.
I’m new in town
What to set up in Oak Grove, 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 Oak Grove.
Power comes from Mississippi Power
Mississippi Power (Mississippi Power Co), an investor-owned utility, serves all of Oak Grove. Its homes paid an average of 15.7¢ per kWh in 2025, about $179 a month (its average across Mississippi).
Service territory: HIFLD Electric Retail Service Territories (map dated Aug 2023). Prices and customers: EIA-861, 2025.
Water comes from North Lamar Water Association
North Lamar Water Association supplies almost all of Oak Grove. It draws ground water and serves 12,778 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 2022–Dec 2024, was 1.2 ppb, below the 15 ppb action level that applied. That’s higher than 51% 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. MS0370006.
6 home internet providers serve Oak Grove
100% of 651 addresses can get 100/20 Mbps; 95% can get fiber.
| Provider | Technology | Addresses | Fastest (Mbps) |
|---|---|---|---|
| Xfinity | Cable | 100% | 1,200/35 |
| AT&T | Fiber, Fixed wireless, DSL | 88% | 5,000/5,000 |
| PearlComm Fiber | Fiber | 27% | 1,000/1,000 |
| C Spire | Fiber, Fixed wireless | 90% | 8,000/8,000 |
| T-Mobile | Fixed wireless | 91% | 100/20 |
| Verizon | Fixed wireless | 3% | 25/6 |
FCC National Broadband Map, as of December 2025. Availability as providers report it, not speeds people get.
We don’t have Oak Grove’s trash rules yet
Pickup rules, the dump and recycling in Oak Grove.
Where your child goes to school
Public school districts and the school path by grade.
Oak Grove is in Lamar County School District.
A−School 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
Oak Grove is unincorporated, so Lamar County is the local government.
Election office: FVAP local election office directory, updated Sep 2023; jurisdictions: EAC EAVS 2024. Registration rules and links: vote.gov, updated Nov 18, 2024.
Oak Grove spans 2 ZIP codes
ZIP codes where Oak Grove residents live, with the share of the town in each.
| ZIP | Post office name | Share of Oak Grove | ZIP’s residents in Oak Grove |
|---|---|---|---|
| 39402 | Hattiesburg, MS | 96% | 4% |
| 39475 | Purvis, MS | 4% | 1% |
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 Oak Grove
Who supplies Oak Grove’s drinking water, and has it had violations?
North Lamar Water Association (EPA ID MS0370006). 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 1.2 ppb (Jan 2022–Dec 2024), against a 15 ppb action level.
Who provides electricity in Oak Grove?
Mississippi Power (Mississippi Power Co), an investor-owned utility. Its homes paid about 15.7¢ per kWh in 2025 (EIA).
What internet providers serve Oak Grove?
Xfinity, AT&T, PearlComm Fiber, C Spire, T-Mobile, Verizon (FCC, as of December 2025).
What ZIP codes are in Oak Grove?
39402 (96%), 39475 (4%), by share of residents. Census 2020 ZIP Code Tabulation Areas.
What school district is Oak Grove in?
Lamar County School District.
How do I register to vote in Oak Grove?
Mississippi 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 Lamar County Registrar. Check your registration at msegov.com.
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.