Power Outages in Jefferson County, IL
As of October 19, 2026 12:50 UTC, no outages are reported by Ameren Illinois Company and Tri-County Electric Coop, Inc (IL) in Jefferson County, IL. There is no live feed for Ameren and Wayne-White Counties Elec Coop. In 2025, the average customer here lost power for about 2.2 hours.
Jefferson County, IL is served by 4 tracked utilities.
Cite this data
- URL
- https://massoutage.com/illinois/jefferson-county
- As of
- October 19, 2026 12:50 UTC
- Publisher
- MassOutage
MassOutage, "Power Outages in Jefferson County, IL", live data as of October 19, 2026 12:50 UTC. https://massoutage.com/illinois/jefferson-county
No active outages are reported by Ameren Illinois Company and Tri-County Electric Coop, Inc (IL) in Jefferson County.
No live feed for Ameren and Wayne-White Counties Elec Coop: outages in theirservice area won't show here.
90%of this county's ~20,994 customers are served by utilities with a county-level live feed.
We can't see outages for: Ameren, Wayne-White Counties Elec Coop. Their customers are not in any number on this page; check their own outage maps.
| Utility | Feed | Out | Served | % out | Small outages | Incidents | Utility ETR | As of |
|---|---|---|---|---|---|---|---|---|
| Ameren Illinois Company | Live · county | 0 | 11,400 | 0.0% | - | 0 | - | |
| Tri-County Electric Coop, Inc (IL) | Live · county | 0 | 7,452 | 0.0% | - | - | - | |
| Ameren | No live feed | can't see | - | - | - | - | - | - |
| Wayne-White Counties Elec Coop | No live feed | can't see | - | - | - | - | - | - |
Ameren Illinois Company and Tri-County Electric Coop, Inc (IL) reportevery town in the county on each poll, so 0 out is a real all-clear. ETRs are the utility's own estimates.
Electricity-dependent residents
HHS emPOWER · data October 7, 2026Medicare beneficiaries in Jefferson Countywho rely on electricity-dependent medical equipment (ventilators, oxygen concentrators, home dialysis, powered wheelchairs, and more). HHS reports counts of 1–10 as “≤11”. Medicare only, so the full at-risk population is larger.
By ZIP code (11)
| ZIP | Power-dependent | Ventilators | O2 concentrators | Home dialysis |
|---|---|---|---|---|
| 62864 | 271 | 24 | 211 | ≤11 |
| 62816 | 25 | ≤11 | 19 | 0 |
| 62814 | 22 | ≤11 | 18 | 0 |
| 62830 | 21 | ≤11 | 18 | 0 |
| 62898 | 20 | ≤11 | 12 | 0 |
| 62872 | 20 | ≤11 | 17 | 0 |
| 62894 | 15 | ≤11 | 13 | 0 |
| 62889 | ≤11 | ≤11 | ≤11 | 0 |
| 62883 | ≤11 | ≤11 | ≤11 | 0 |
| 62846 | ≤11 | 0 | ≤11 | 0 |
| 62810 | ≤11 | 0 | ≤11 | 0 |
Emergency managers can request identified beneficiary lists through their state health department via the HHS emPOWER program.
Outage began, grew, restoration estimate changed, restored: by email, Slack, Teams, Discord or signed webhook, for Jefferson County or any town and utility in it.
No active NWS alerts for Jefferson County right now.
Jefferson County has been under 17 National Weather Service alerts recently, most recently a Frost Advisory on October 18, 2026.
- Heat Advisory ×12
- Special Weather Statement ×3
- Frost Advisory ×2
Latest Jefferson County, IL outage updates
A running log of how this outage has changed, updated automatically as utilities report in.
- RESOLVED
Power restored after 30m
- RESTORATION ETA
Restoration now estimated October 14, 2026
- OUTAGE BEGAN
Outage began: 227 customers out (1.1% of the county)
Hardest-hit cities in Jefferson County
Where this event is concentrated across the county's towns and townships.
Historical reliability
In 2025, the average customer in Jefferson County went about 2.2 hours without power. Peak simultaneous outage on record reached 12,259 customers.
The US EIA reports Illinois utilities averaged 2.4 hrs without power per customer (SAIDI) in 2025, a cross-check on our county estimate of 2.2 hrs.
Worst year here was 2019 (peak 4,683 customers out) · decade average 4.8 hrs without power per customer/yr.
| Year | Outage events | Peak customers out | Avg hrs/customer |
|---|---|---|---|
| 2015 | 394 | 3,193 | 2.5 |
| 2016 | 436 | 3,501 | 3.7 |
| 2017 | 342 | 3,003 | 1.5 |
| 2018 | 906 | 6,191 | 12.9 |
| 2019 | 855 | 4,683 | 12.9 |
| 2020 | 689 | 3,056 | 2.3 |
| 2021 | 653 | 12,259 | 3.7 |
| 2022 | 629 | 2,771 | 3.0 |
| 2023 | 644 | 3,004 | 5.0 |
| 2024 | 650 | 4,728 | 3.2 |
| 2025 | 594 | 1,540 | 2.2 |
Cost of power in Jefferson County
ENERGY & AI DEMAND →Estimated residential electricity price for Jefferson County, customer-weighted across the utilities serving it (US EIA, 2025). Retail prices aren't published at the county level; this is a derived estimate.
- Ameren Illinois Company16.7¢587,659 cust
- Tri-County Electric Coop, Inc (IL)16.2¢16,203 cust
- Wayne-White Counties Elec Coop16.4¢11,792 cust
Weighted by each utility's residential customer count (utilities report customers at the state level; a per-county share isn't published). Rising retail prices track a national demand surge; see energy & the data-center boom.
Relatively High high winds exposure · 4.8 hrs/yr of outages over the last decade.
FEMA rates this county’s social vulnerability relatively moderate: outages hit harder where communities are less able to respond and recover.
All hazard rankings →Power outages in Jefferson County: FAQ
- How often does Jefferson County, IL lose power?
- Based on EAGLE-I records, Jefferson County, IL logged 594 distinct outage events in 2025, averaging about 2.2 hours without power per customer over the year.
- What was the worst power outage in Jefferson County, IL?
- The largest tracked outage peaked at 12,259 customers without power, beginning February 16, 2021 and lasting about 9h.
- Is there a power outage in Jefferson County, IL right now?
- No major outage is currently reported for Jefferson County, IL. Live coverage depends on whether local utilities report to ODIN.
- Which utilities serve Jefferson County, IL?
- Tracked electric providers include Ameren, Ameren Illinois Company, Tri-County Electric Coop, Inc (IL).
Outages are tracked at the county level; these ZIP codes fall within Jefferson County.
62810, 62814, 62816, 62830, 62846, 62864, 62872, 62883, 62889, 62893, 62894, 62898
Electric providers serving this county
From EIA-861 service territory, with official reliability where reported.
| Provider | Official SAIDI (EIA) | Live | Report outage |
|---|---|---|---|
| Ameren Illinois Company | 4.8 hrs | Live · county | - |
| Tri-County Electric Coop, Inc (IL) | 2.2 hrs | Live · county | - |
| Ameren | - | No live feed | - |
| Wayne-White Counties Elec Coop | - | No live feed | - |
Data from DOE/ORNL ODIN, DOE EAGLE-I, EIA Form 861 (utility reliability), EIA electricity retail prices and FEMA National Risk Index, every source we read. Historical figures derive from the DOE/ORNL EAGLE-I dataset (EAGLE-I tracked roughly 0% of Illinois customers). Machine-readable data: /api/v1/counties/17081 and /api/v1/counties/17081/history.