Cost of Living Comparison Between Seattle, WA and O'Fallon, IL Cost of Living Comparison Between Seattle, WA and O'Fallon, IL

Monthly Cost of Living

A single person spends $3,598 per month in Seattle, WA vs $2,591 in O'Fallon, IL, rent included.

A couple spends around $5,539 per month in Seattle, WA vs $3,815 in O'Fallon, IL, rent included.

A family of three spends $7,479 per month in Seattle, WA vs $5,038 in O'Fallon, IL, rent included.

Seattle, WA costs about 39% more than O'Fallon, IL, driven mainly by Groceries & Markets.

Both Seattle, WA and O'Fallon, IL sit above the global median – Seattle, WA by 168%, O'Fallon, IL by 93%.

Meal at Budget Restaurant

$24.80 $24.80

$20.34 $20.34

21.93%

Three-Course Dinner for Two, Mid-Range

$118 $118

$69.1 $69.1

70.42%

Fast Food Meal (McDonalds, etc)

$13.77 $13.77

$11.11 $11.11

23.94%

Cappuccino

$5.71 $5.71

$4.95 $4.95

15.35%

Coke/Pepsi/Fanta/Sprite (0.33 liter bottle)

$3.05 $3.05

$2.42 $2.42

26.03%

Water (0.33 liter bottle)

$2.50 $2.50

$1.96 $1.96

27.55%

Local Beer (0.5 liter draught)

$7.83 $7.83

$4.90 $4.90

59.80%

Imported Beer (0.33 liter bottle)

$7.88 $7.88

$6.60 $6.60

19.39%

Milk (1 liter)

$1.35 $1.35

$0.78 $0.78

73.08%

White Bread (500g)

$5.06 $5.06

$2.63 $2.63

92.40%

Rice (white) (1kg)

$5.39 $5.39

$5.61 $5.61

-3.92%

Eggs

$6.85 $6.85

$2.81 $2.81

143.77%

Local Cheese (1kg)

$25.07 $25.07

$8.56 $8.56

192.87%

Chicken Fillets (1kg)

$15.85 $15.85

$7.80 $7.80

103.21%

Beef Round Steak (1kg)

$20.59 $20.59

$16.37 $16.37

25.78%

Apples (1kg)

$6.14 $6.14

$6.94 $6.94

-11.53%

Banana (1kg)

$2.82 $2.82

$2.28 $2.28

23.68%

Oranges (1kg)

$5.51 $5.51

$5.60 $5.60

-1.61%

Tomato (1kg)

$6.74 $6.74

$4.12 $4.12

63.59%

Potato (1kg)

$3.15 $3.15

$3.99 $3.99

-21.05%

Onion (1kg)

$3.82 $3.82

$3.93 $3.93

-2.80%

Lettuce (1 head)

$2.69 $2.69

$2.06 $2.06

30.58%

Water (1.5 liter bottle)

$2.64 $2.64

$2.33 $2.33

13.30%

Cigarettes 20 Pack (Marlboro, Camel)

$11.65 $11.65

$6.92 $6.92

68.35%

Wine (Bottle)

$15.69 $15.69

$14.81 $14.81

5.94%

Local Beer (0.5 liter bottle)

$2.93 $2.93

$1.89 $1.89

55.03%

Imported Beer (0.33 liter bottle)

$4.24 $4.24

$3.96 $3.96

7.07%

One-way Ticket (Public Transport)

$2.82 $2.82

$2.04 $2.04

38.24%

Public Transport Monthly Pass (Regular Price)

$100 $100

Taxi Start (Normal Tariff)

$2.60 $2.60

$3.44 $3.44

-24.42%

Taxi (Normal Tariff) (1km)

$1.72 $1.72

$1.57 $1.57

9.55%

Taxi 1hour Waiting (Normal Tariff)

$30.22 $30.22

$39.52 $39.52

-23.53%

Gasoline (1 liter)

$1.19 $1.19

$0.85 $0.85

40.00%

Midsize Hatchback 1.4l (Volkswagen Golf, Toyota Prius, Honda Civic, etc)

$32.7K $32.7K

$29.7K $29.7K

9.97%

Compact Sedan 1.6l (Toyota Corolla, Mazda3, Kia K4, Hyundai Elantra, etc)

$26.1K $26.1K

$25.2K $25.2K

3.59%

Utilities for 2 People in 2-bedroom Apartment (Heating, Electricity, Gas, Water, Garbage) (85m2)

$263 $263

$239 $239

9.83%

SIM Card Monthly Plan (Calls and 10GB+ Data)

$60.9 $60.9

$52.6 $52.6

15.76%

Internet (50+ Mbps, Unlimited Data)

$75.9 $75.9

$68.8 $68.8

10.27%

Gym Membership (Monthly)

$79.6 $79.6

$42.50 $42.50

87.25%

Tennis Court (1 Hour on Weekend)

$39.89 $39.89

Cinema Ticket

$16.27 $16.27

$13.20 $13.20

23.26%

Preschool or Kindergarten, Full Day, Private, 1 Child (Monthly)

$2,281 $2,281

$667 $667

241.76%

International Primary School, 1 Child (Yearly)

$29.3K $29.3K

$23.9K $23.9K

22.76%

Jeans (Levis 501 Or Similar)

$68.6 $68.6

$51.7 $51.7

32.76%

Summer Dress (H&M, Zara, etc)

$52.0 $52.0

$40.75 $40.75

27.51%

Sport Shoes (Adidas, Nike)

$116 $116

$75.0 $75.0

54.32%

Men's Leather Business Shoes

$143 $143

$121 $121

18.59%

1-bedroom Apartment, City Center (Monthly)

$2,336 $2,336

$1,608 $1,608

45.32%

1-bedroom Apartment, Outside City Center (Monthly)

$1,863 $1,863

$1,332 $1,332

39.87%

3-bedroom Apartment, City Center (Monthly)

$4,628 $4,628

$2,599 $2,599

78.07%

3-bedroom Apartment, Outside City Center (Monthly)

$3,477 $3,477

$2,248 $2,248

54.68%

Buy Apartment in City Center (m2)

$7,766 $7,766

$3,005 $3,005

158.40%

Buy Apartment Outside City Center (m2)

$5,232 $5,232

$2,260 $2,260

131.48%

Average Monthly Net Salary (After Tax)

$6,617 $6,617

20-Year Fixed Mortgage Interest Rate (Annual %)

6.42

6.49

-1.08%

CityCost data is based on AI and user input – minor inaccuracies may occur.

Last update for Seattle, WA: May 30, 2026

Last update for O'Fallon, IL: June 1, 2026

Cost Breakdown

A central one-bedroom costs $2,336 in Seattle, WA versus $1,608 in O'Fallon, IL. Rent is usually the largest line item in a monthly budget, so the gap here sets the tone for the overall comparison.

A mid-range dinner for two costs $118 in Seattle, WA versus $69.0 in O'Fallon, IL. Monthly groceries follow the same trend: $547 vs $376 – making O'Fallon, IL the more affordable choice for daily food spending.

City Median Internet Speeds Comparison (Updated April 2026)

The chart highlights the Precision Threshold for mobile and fixed broadband internet speeds, updated quarterly.

Digital Nomad Cost of Living Index

Seattle, WA vs O'Fallon, IL: Cost of Living - Frequently Asked Questions

Yes – Seattle, WA is pricier by about 39%, and the gap shows up most in Groceries & Markets. It's not just housing either; the difference applies across most spending categories.

For a comfortable life, plan on about $5,397 per month in Seattle, WA and $3,887 in O'Fallon, IL. That covers rent, food, utilities, transport, and enough left over to feel settled – not just surviving.

Rent is clearly cheaper in O'Fallon, IL, especially for central apartments. Housing is actually the single biggest factor behind the overall cost gap between these two cities.

Monthly expenses with rent come to $3,598 in Seattle, WA and $2,591 in O'Fallon, IL. The difference isn't just one category – it shows up across housing, food, transport, and services.

Kindergarten costs $2,281 per month in Seattle, WA and $667 in O'Fallon, IL. For families with young kids, this one expense can tip the scales when choosing between the two cities.

$2,500 is a stretch for both – monthly costs hit $3,598 in Seattle, WA and $2,591 in O'Fallon, IL. You'll need shared housing and careful budgeting no matter which city you pick.

Families tend to lean toward O'Fallon, IL – lower housing and cheaper childcare make a real difference, especially on a single income or when paying for private education.

Both have safer and rougher neighborhoods, but overall safety is comparable to other large cities. Neighborhood choice matters more than the city-level comparison – central, well-trafficked areas feel secure in both.

If budget matters most, go with O'Fallon, IL. If higher salaries, better infrastructure, or specific career opportunities are the priority, Seattle, WA makes more sense. Both are solid long-term options with distinct trade-offs.