Last update: Nov 2026

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

For one person, living is cheaper in O’Fallon, IL: $2,634 a month against $3,762 in Seattle, WA, rent and utilities included – about $13,500 less a year. Rent and utilities account for most of the difference.

182

Cost of Living Index in Seattle, WA
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Seattle, WA Living Index
126

Cost of Living Index in O'Fallon, IL
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O'Fallon, IL Living Index

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Seattle, WA

🇺🇸 United States

$3,762

/mo nomad

O'Fallon, IL

🇺🇸 United States

$2,634

/mo nomad

Monthly Cost of Living

How much you'll spend in Seattle, WA and in O'Fallon, IL

Real prices from locals and on-the-ground checks – rent, groceries, transit and the daily extras. Here's what a month in Seattle, WA and in O'Fallon, IL actually costs, broken down by who's living it.

A single person spends $3,762 per month in Seattle, WA vs $2,634 in O’Fallon, IL, rent included.

Seattle, WA $3,762
O'Fallon, IL $2,634

A couple spends around $5,651 per month in Seattle, WA vs $3,832 in O’Fallon, IL, rent included.

Seattle, WA $5,651
O'Fallon, IL $3,832

A family of three spends $7,541 per month in Seattle, WA vs $5,029 in O’Fallon, IL, rent included.

Seattle, WA $7,541
O'Fallon, IL $5,029

Seattle, WA costs about 43% more than O’Fallon, IL, and outside of rent the biggest gap is in eating out.

Both Seattle, WA and O’Fallon, IL sit above the global median – Seattle, WA by 178%, O’Fallon, IL by 95%.

Meal at Budget Restaurant

$23.80 $23.80

$18.05 $18.05

31.86%

Three-Course Dinner for Two, Mid-Range

$98.6 $98.6

$76.5 $76.5

29.01%

Fast Food Meal (McDonalds, etc)

$14.94 $14.94

$10.51 $10.51

42.15%

Cappuccino

$6.79 $6.79

$4.97 $4.97

36.62%

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

$3.23 $3.23

$2.39 $2.39

35.15%

Water (0.33 liter bottle)

$3.15 $3.15

$1.58 $1.58

99.37%

Local Beer (0.5 liter draught)

$8.21 $8.21

$3.82 $3.82

114.92%

Imported Beer (0.33 liter bottle)

$7.87 $7.87

$5.23 $5.23

50.48%

Milk (1 liter)

$1.17 $1.17

$1.01 $1.01

15.84%

White Bread (500g)

$5.29 $5.29

$3.32 $3.32

59.34%

Rice (white) (1kg)

$5.76 $5.76

$5.49 $5.49

4.92%

Eggs

$4.89 $4.89

$3.94 $3.94

24.11%

Local Cheese (1kg)

$20.25 $20.25

$12.10 $12.10

67.36%

Chicken Fillets (1kg)

$17.95 $17.95

$15.68 $15.68

14.48%

Beef Round Steak (1kg)

$23.35 $23.35

$16.84 $16.84

38.66%

Apples (1kg)

$5.94 $5.94

$8.61 $8.61

-31.01%

Banana (1kg)

$1.89 $1.89

$2.30 $2.30

-17.83%

Oranges (1kg)

$5.35 $5.35

$5.76 $5.76

-7.12%

Tomato (1kg)

$6.57 $6.57

$5.15 $5.15

27.57%

Potato (1kg)

$3.39 $3.39

$4.39 $4.39

-22.78%

Onion (1kg)

$2.88 $2.88

$3.28 $3.28

-12.20%

Lettuce (1 head)

$2.89 $2.89

$2.03 $2.03

42.36%

Water (1.5 liter bottle)

$2.43 $2.43

$2.53 $2.53

-3.95%

Cigarettes 20 Pack (Marlboro, Camel)

$12.18 $12.18

$8.20 $8.20

48.54%

Wine (Bottle)

$15.24 $15.24

$14.87 $14.87

2.49%

Local Beer (0.5 liter bottle)

$4.38 $4.38

$2.87 $2.87

52.61%

Imported Beer (0.33 liter bottle)

$5.89 $5.89

$3.25 $3.25

81.23%

One-way Ticket (Public Transport)

$2.96 $2.96

$2.21 $2.21

33.94%

Public Transport Monthly Pass (Regular Price)

$109 $109

$62.3 $62.3

75.18%

Taxi Start (Normal Tariff)

$2.52 $2.52

$2.75 $2.75

-8.36%

Taxi (Normal Tariff) (1km)

$1.72 $1.72

$1.57 $1.57

9.55%

Taxi 1hour Waiting (Normal Tariff)

$29.70 $29.70

$29.49 $29.49

0.71%

Gasoline (1 liter)

$1.51 $1.51

$1.05 $1.05

43.81%

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

$36.2K $36.2K

$27.4K $27.4K

32.11%

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

$25.7K $25.7K

$26.6K $26.6K

-3.22%

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

$289 $289

$246 $246

17.21%

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

$69.1 $69.1

$69.5 $69.5

-0.65%

Internet (50+ Mbps, Unlimited Data)

$84.8 $84.8

$75.2 $75.2

12.77%

Gym Membership (Monthly)

$69.4 $69.4

$40.68 $40.68

70.67%

Tennis Court (1 Hour on Weekend)

$35.05 $35.05

Cinema Ticket

$17.97 $17.97

$12.38 $12.38

45.15%

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

$2,819 $2,819

$679 $679

315.14%

International Primary School, 1 Child (Yearly)

$43.9K $43.9K

$12.8K $12.8K

242.84%

Jeans (Levis 501 Or Similar)

$91.2 $91.2

$47.55 $47.55

91.74%

Summer Dress (H&M, Zara, etc)

$55.1 $55.1

$24.73 $24.73

122.64%

Sport Shoes (Adidas, Nike)

$127 $127

$57.0 $57.0

122.94%

Men's Leather Business Shoes

$162 $162

$50.1 $50.1

223.72%

1-bedroom Apartment, City Center (Monthly)

$2,579 $2,579

$1,575 $1,575

63.72%

1-bedroom Apartment, Outside City Center (Monthly)

$1,943 $1,943

$1,273 $1,273

52.59%

3-bedroom Apartment, City Center (Monthly)

$5,100 $5,100

$2,557 $2,557

99.43%

3-bedroom Apartment, Outside City Center (Monthly)

$3,541 $3,541

$2,078 $2,078

70.44%

Buy Apartment in City Center (m2)

$7,357 $7,357

$2,778 $2,778

164.83%

Buy Apartment Outside City Center (m2)

$4,921 $4,921

$2,338 $2,338

110.46%

Average Monthly Net Salary (After Tax)

$6,448 $6,448

20-Year Fixed Mortgage Interest Rate (Annual %)

6.8

6.72

1.19%

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

Last update for Seattle, WA: November 2, 2026

Last update for O'Fallon, IL: October 31, 2026

Monthly budget structure

Share of the monthly basket for one person, rent included.

Accommodation & Living

Seattle, WA

$1.9K 51.6%

O'Fallon, IL

$1.3K 48.4% 34.5% $670

Groceries & Markets

Seattle, WA

$544 14.5%

O'Fallon, IL

$461 17.5% 15.3% $83

Monthly Utilities & Internet

Seattle, WA

$443 11.8%

O'Fallon, IL

$391 14.9% 11.6% $52

Eating Out

Seattle, WA

$399 10.6%

O'Fallon, IL

$281 10.7% 29.6% $118

Clothing & Footwear

Seattle, WA

$196 5.2%

O'Fallon, IL

$81 3.1% 58.8% $115

Getting Around

Seattle, WA

$132 3.5%

O'Fallon, IL

$82 3.1% 38.1% $50

Sport & Entertainment

Seattle, WA

$105 2.8%

O'Fallon, IL

$65 2.5% 37.9% $40

Cost Breakdown

A central one-bedroom costs $2,579 in Seattle, WA versus $1,575 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 $99 in Seattle, WA versus $76 in O’Fallon, IL. Monthly groceries follow the same trend: $544 vs $461 – making O’Fallon, IL the more affordable choice for daily food spending.

Good to know

🇺🇸 Seattle, WA

🇺🇸 O'Fallon, IL

🕒 Local time

09:11 9:11 AM

11:11 11:11 AM

2 h ahead of Seattle, WA

🌤 Weather

👥 Population

737,015

94,074

💱 Currency

United States Dollar USD $

📈 Exchange rate

1 USD = 0.892 EUR

Exchange rates and currency converter

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Between locations

Seattle, WA O'Fallon, IL 2,790 km ≈ 4 h nonstop flight

From you

Seattle, WA
O'Fallon, IL

Distances are measured in a straight line. Your location is detected approximately.

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 43%, and outside of rent the gap shows up most in eating out.

For a comfortable life, plan on about $5,642 per month in Seattle, WA and $3,951 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: a one-bedroom in the center costs $1,575 there versus $2,579 in Seattle, WA.

Groceries cost about 18% more in Seattle, WA, though the gap depends on what you buy.

A mid-range dinner for two costs $99 in Seattle, WA and $76 in O’Fallon, IL. That’s a good indicator of the overall restaurant and café pricing gap between the two cities.

$2,500 is a stretch for both – monthly costs hit $3,762 in Seattle, WA and $2,634 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.

For expats, O’Fallon, IL is the easier option financially – housing and daily costs are lower, and overall it costs about 30% less, which matters a lot on a fixed budget or early-career salary.