# Jefferson County, MO — Power Outage Status

As of October 19, 2026 15:25 UTC, 24 customers are without power in Jefferson County, MO, according to MassOutage's tally of the utility and government outage feeds it polls.

Cite as: MassOutage, "Power Outages in Jefferson County, MO", live data as of October 19, 2026 15:25 UTC. https://massoutage.com/missouri/jefferson-county

Live and historical power-outage data for Jefferson County, Missouri (FIPS 29099), aggregated by MassOutage (https://massoutage.com) from public utility and government sources. Unofficial — confirm with the utility before acting; for emergencies call 911.

## Live status (as of 2026-10-19T15:25:49.505Z UTC)
- Customers without power: **24** (0.02% of 108,189 tracked)
- Active incidents: 5
- Worst estimated restoration: 2026-10-19T19:00:00.000Z
- Utilities affected:
  - Union Electric Co - (MO): 24 out (ETR 2026-10-19T19:00:00Z)

> Live data changes continuously — do not report these as current without re-checking. Fetch fresh JSON: https://massoutage.com/api/v1/live/counties/29099

## History
- In 2025, the average customer here lost power for about 15.4 hours (DOE/ORNL EAGLE-I).
- Annual reports: https://massoutage.com/reports/2025/missouri/jefferson-county

## More
- County page: https://massoutage.com/missouri/jefferson-county
- Live JSON API: https://massoutage.com/api/v1/live/counties/29099
- Developer API & AI guide: https://massoutage.com/developers and https://massoutage.com/developers/ai-guide.md