Electric companies in St. Clair County, Illinois

Q: St. Clair County, IL: what do homes pay for electricity?

No single price in St. Clair County, IL: 4 utilities deliver power and homes pick a plan. Illinois average 15.87 cents per kWh, $110 a month at 693 kWh.

Q: St. Clair County, IL: how many homes heat with electricity?

St. Clair County, IL: 33,850 of 101,273 occupied homes, 33.4%, rank 19 of 102.

Q: St. Clair County, IL: median household income?

$70,178 in St. Clair County, IL, rank 35 of 102; 254,777 residents, 101,273 households.

Q: St. Clair County, IL: outage-linked storms since 2015?

St. Clair County, IL: 146 NWS events, peak year 2025.

Q: St. Clair County, IL: flood insurance claims since 2015?

St. Clair County, IL: 342 NFIP flood claims, $4.0M paid, 3.4 per 1,000 homes, 1.0% of homes insured.

Q: How old are the homes in St. Clair County, IL?

St. Clair County, IL: median home built 1975; 55.3% predate 1980, 71.4% detached, 11.4% in 5+ unit buildings.

Q: St. Clair County, IL: share of income for energy?

St. Clair County, IL homes spend $1,700 a year on electricity, $2,531 on all energy: 3.0% of $84,015; 9.8% for lower incomes.

St. Clair County, IL ranks 2nd of 102 Illinois counties for ice storm risk, FEMA score 91.0. St. Clair County, IL has 254,777 residents. St. Clair County, IL: 4 utilities listed by EIA.

Households in St. Clair County can pick a supplier. See how to compare suppliers.

St. Clair County, IL on the map

St. Clair County, IL darker: more storm events

Electric utilities in St. Clair County, IL

Utility listed for St. Clair County, IL	Type	Home accounts in Illinois
Ameren Illinois Company in St. Clair County, IL	Investor Owned	1,060,894
Southwestern Electric Coop Inc in St. Clair County, IL	Cooperative	24,822
Egyptian Electric Coop Assn in St. Clair County, IL	Cooperative	13,707
Tri-County Electric Coop, Inc (IL) in St. Clair County, IL	Cooperative	16,197

Plans from retail suppliers are not in public data, so no plan prices are shown. The listed utilities deliver the power, and which one serves your street depends on the address.

Outage risk in St. Clair County, IL

St. Clair County, IL, NWS storm events 2015 to 2025: 146 in all, 57.3 per 100,000 residents of 254,777, rank 24 of 102 Illinois counties. Property damage in St. Clair County, IL: $1.1M, with 5 direct injuries or deaths.

Events by year in St. Clair County, IL

events a year, St. Clair County, IL

10'15
13'16
13'17
9'18
12'19
6'20
10'21
11'22
27'23
5'24
30'25

Events by type

events by type, St. Clair County, IL

Thunderstorm and high wind105
Heat wave16
Tornado14
Winter storm and heavy snow10
Ice storm1

St. Clair County, IL outage-linked hazards
St. Clair County, IL	FEMA	Score	Rank	Events	Peak	Damage
St. Clair County, IL, thunderstorm and high wind	Relatively Moderate	54.0	76 of 102	105	2025 (21)	$644K
St. Clair County, IL, tornado	Relatively High	95.5	11 of 102	14	2025 (5)	$460K
St. Clair County, IL, hurricane and tropical storm	Very Low	34.9	30 of 102	0	none	$0
St. Clair County, IL, ice storm	Relatively High	91.0	2 of 102	1	2017 (1)	$0
St. Clair County, IL, winter storm and heavy snow	Relatively High	87.2	11 of 102	10	2015 (2)	$0
St. Clair County, IL, heat wave	Relatively High	98.1	2 of 102	16	2016 (4)	$0

ZIP codes in St. Clair County, IL

62059
62201
62203
62204
62205
62206
62207
62208
62220
62221
62223
62225
62226
62232
62239
62240
62243
62254
62255
62257
62258
62260
62264
62269
62282
62285
62289
62293

Facts about St. Clair County, IL

Residents of St. Clair County, IL, ACS 2023: 254,7779 of 102 Illinois counties
Households in St. Clair County, IL: 101,2732.52 people each
Owner-occupied homes in St. Clair County, IL: 67.8%68,653 owner and 32,620 renter households
Median household income in St. Clair County, IL: $70,17835 of 102 Illinois counties
Housing units in St. Clair County, IL: 115,34814,075 vacant or seasonal, 12.2% of the units
Homes heated by electricity in St. Clair County, IL: 33.4%33,850 homes, 19 of 102 Illinois counties
Utilities listed for St. Clair County, IL: 44 with a home price: Ameren Illinois Company, Southwestern Electric Coop Inc, Egyptian Electric Coop Assn
ZIP areas touching St. Clair County, IL: 2862059 to 62293
Outage-linked storm events in St. Clair County, IL: 146NWS storm events, 2015 to 2025
Homes built before 1980 in St. Clair County, IL: 55.3%median year built 1975
Flood claims in St. Clair County, IL: 342NFIP 2015 to 2025, $4.0M paid
Home energy burden in St. Clair County, IL: 3.0%$1,700 a year on electricity (DOE LEAD)

Electricity price since 2015 in St. Clair County, IL

St. Clair County, IL has no price series of its own. St. Clair County, IL: the Illinois average was 12.50 ¢/kWh in 2015. St. Clair County, IL: 15.87 ¢ in 2024, 27% up. St. Clair County, IL: against 30% up for the U.S. average.

St. Clair County, IL: a 693 kWh month at the Illinois price. St. Clair County, IL: $87 in 2015, $110 in 2024. St. Clair County, IL: $1,320 a year, 1.9% of the $70,178 median income.

St. Clair: 10 yearly prices

Year	Illinois average	St. Clair: Gap to U.S. average
2015, St. Clair	12.50	-0.15
2016, St. Clair	12.54	-0.01
2017, St. Clair	12.95	+0.06
2018, St. Clair	12.77	-0.10
2019, St. Clair	13.03	+0.02
2020, St. Clair	13.04	-0.11
2021, St. Clair	13.18	-0.48
2022, St. Clair	15.65	+0.61
2023, St. Clair	15.71	-0.29
2024, St. Clair	15.87	-0.61

St. Clair County, IL: EIA-861 home prices, 2015 to 2024, not a St. Clair County, IL price.

CSV

Housing and heating in St. Clair County, IL

St. Clair County, IL: 63,832 of 115,348 homes were built before 1980 and 24,656 in 2000 or later. St. Clair County, IL has 82,309 detached houses, 13,110 homes in 5+ unit buildings, 5,320 mobile homes, and 32,620 of 101,273 households rent.

Age of homes in St. Clair County, IL

% of homes by decade built, St. Clair County, IL

13pre-40
640s
1450s
1260s
1170s
1180s
1290s
1400s
710s
120+

Heating fuel in St. Clair County, IL

% of homes by main fuel, St. Clair County

Utility gas60.5
Electricity33.4
Propane4.8

St. Clair County, IL housing against Illinois counties
St. Clair County, IL	Value	State median	Gap	Rank (1 = highest)
St. Clair County, IL, median year built	1975	1969	+6 years	21 of 102
St. Clair County, IL, built before 1980	55.3%	66.6%	-11.3 points	85 of 102
St. Clair County, IL, built 2000 or later	21.4%	14.2%	+7.2 points	16 of 102
St. Clair County, IL, detached houses	71.4%	78.6%	-7.2 points	82 of 102
St. Clair County, IL, apartments in 5+ unit buildings	11.4%	5.4%	+6.0 points	16 of 102
St. Clair County, IL, mobile homes	4.6%	5.6%	-1.0 points	56 of 102
St. Clair County, IL, renter households	32.2%	23.2%	+9.0 points	11 of 102
St. Clair County, IL, median home value	$168,800	$126,000	+$42,800	24 of 102
St. Clair County, IL, median gross rent a month	$1,032	$793	+$239	11 of 102
St. Clair County, IL, people per household	2.47	2.35	+0.12	24 of 102

Cost of living with electricity in St. Clair County, IL

St. Clair County, IL: electricity $1,700 a year per home (DOE LEAD), all home energy $2,531, 3.0% of $84,015 income. 100,701 households in St. Clair County, IL spend about $171.2 million a year on electricity and $254.9 million on all home energy. Lower-income homes in St. Clair County, IL ($21,990 a year) spend 9.8% of income, 3.3 times the all-home figure.

Energy burden in St. Clair County, IL

% of income on energy, St. Clair County, IL

All households3.0
Lower income9.8
Owners2.9
Renters3.7
Illinois counties2.3

St. Clair County, IL home energy cost by household group
St. Clair County, IL	Homes	Income	Power	Gas	Other	Burden
St. Clair County, IL, all households	100,701	$84,015	$1,700	$806	$25	3.0%
St. Clair County, IL, lower income	32,476	$21,990	$1,460	$687	$18	9.8%
St. Clair County, IL, owners	68,404	$104,871	$1,956	$1,043	$34	2.9%
St. Clair County, IL, renters	32,297	$39,845	$1,158	$304	$8	3.7%

Flood claims and flood insurance in St. Clair County, IL

St. Clair County, IL: 342 NFIP flood claims in 2015 to 2025, $4.0M paid, median paid claim $8,450.

1,007 of 101,953 residential structures in St. Clair County, IL carry an NFIP contract. 1,024 NFIP policies of any type were in force in St. Clair County, IL on 8 Sep 2026. St. Clair County, IL lists 79 repetitive-loss properties.

St. Clair County, IL: claims history, not an outage count.

Flood claims by year in St. Clair County, IL

flood claims a year, St. Clair County, IL

47'15
13'16
13'17
15'18
7'19
7'20
<5'21
98'22
13'23
114'24
14'25

St. Clair County, IL flood claims and flood insurance
St. Clair County, IL	Value	Median county	Rank (1 = highest)
St. Clair County, IL, claims 2015-2025	342	—	4 of 61
St. Clair County, IL, paid 2015-2025	$4.0M	—	7 of 61
St. Clair County, IL, median paid claim	$8,450	—	—
St. Clair County, IL, claims per 1,000 homes	3.4	1.1	11 of 61
St. Clair County, IL, homes with flood insurance	1.0%	0.3%	13 of 99
St. Clair County, IL, policies in force	1,024	—	—
St. Clair County, IL, repetitive-loss properties	79	—	—

St. Clair County, IL: OpenFEMA NFIP, claims as of 8 Sep 2026, insured share as of 3 Aug 2026; counts under 5 are hidden.

St. Clair County, IL: flood claims by state, flood hub.

Climate and electric heating in St. Clair County, IL

St. Clair County, IL totals 4,574 heating degree days and 1,452 cooling degree days a year (1991-2020 normal).

For heating, St. Clair County, IL is the 86th coldest of 102 counties in Illinois: 4,574 against a median of 5,457. For cooling, St. Clair County, IL is the 5th hottest: 1,452 against a median of 1,112.

St. Clair County, IL runs furnace and air conditioner, 3,122 degree days apart.

St. Clair County, IL: 4,367 heating degree days in 2016-2025, 4,574 on the normal, 5% under.

In St. Clair County, IL, 33.4% of 101,273 homes heat with electricity; the other 66.6% use another main heating fuel.

St. Clair County, IL

Heating degree days, 4,574 vs 5,45784
Cooling degree days, 1,452 vs 1,112131
Electric heat, 33.4% vs 22.2%150
IL median county100

St. Clair County, IL: degree days, electric heat
St. Clair County, IL	Value	IL median county	St. Clair County, IL, rank (1 = highest)
St. Clair County, IL, heating degree days, 1991-2020 normal	4,574	5,457	86 of 102
St. Clair County, IL, heating degree days, 2016-2025 mean	4,367	5,201	83 of 102
St. Clair County, IL, cooling degree days, 1991-2020 normal	1,452	1,112	5 of 102
St. Clair County, IL, cooling degree days, 2016-2025 mean	1,561	1,200	5 of 102
St. Clair County, IL, electric heating, ACS 2019-2023	33.4%	22.2%	19 of 102

St. Clair County, IL: ACS B25040, 101,273 homes; NOAA nClimDiv, retrieved 7 Oct 2026.

Analyst note on St. Clair County, IL

St. Clair County, IL touches 28 ZIP areas, 62059 to 62293, about 9,099 residents each. St. Clair County, IL counts 254,777 residents in 101,273 households. 33,850 of the 101,273 homes in St. Clair County, IL heat with electricity.

Household income in St. Clair County, IL is $70,178; 68,653 of its 101,273 households own. St. Clair County, IL has 115,348 housing units, 14,075 (12.2%) vacant or seasonal, and 32,620 rented homes. St. Clair County, IL logged 146 storm events for its 254,777 residents.

The median home in St. Clair County, IL dates from 1975. Homes in St. Clair County, IL pay $1,700 a year for electricity.

Bill and heat pump calculator, St. Clair County, IL

Compare St. Clair County, IL with its neighbours

Madison County sits 19 miles north of St. Clair County, IL, with 264,631 residents against 254,777 there, 133 storm events against 146, median home built 1970 against 1975, energy burden 2.9% against 3.0%, income $74,800 against $70,178.
Monroe County sits 19 miles southwest of St. Clair County, IL, with 34,969 residents against 254,777 there, 72 storm events against 146, median home built 1990 against 1975, energy burden 2.5% against 3.0%, income $101,635 against $70,178.
Jersey County sits 40 miles northwest of St. Clair County, IL, with 21,336 residents against 254,777 there, 48 storm events against 146, median home built 1975 against 1975, energy burden 3.2% against 3.0%, income $79,104 against $70,178.
Randolph County sits 42 miles south of St. Clair County, IL, with 30,142 residents against 254,777 there, 60 storm events against 146, median home built 1972 against 1975, energy burden 3.5% against 3.0%, income $68,870 against $70,178.
Washington County sits 34 miles east of St. Clair County, IL, with 13,682 residents against 254,777 there, 59 storm events against 146, median home built 1970 against 1975, energy burden 3.5% against 3.0%, income $75,652 against $70,178.

Cities in St. Clair County, IL

Belleville electricity rates41,722 residents
O'Fallon electricity rates32,139 residents

Illinois: home prices since 2001, planned plants.

Questions on St. Clair County, IL

St. Clair County, IL: what do homes pay for electricity?