Northfield, IL vs Des Peres, MO: Cost of Living

Which city costs less?

Des Peres, MO has a modeled overall cost index 14.1% lower than Northfield, IL.

Northfield, IL · modeled 2BR rent: $2,410 / month
Des Peres, MO · modeled 2BR rent: $1,830 / month

These are saved estimates, not current rental listings. Some cities use adjusted regional data. Your household budget can differ from the overall index. Sources and assumptions

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Cost of Living Comparison 2026

Compare Northfield, IL and Des Peres, MO using saved regional data and explicit budgeting assumptions. Rent estimates are not live listings. Change the salary below, then check the source notes before applying a result to your household.

Saved regional estimates · Sources and assumptions

Current salary in Northfield, IL

Numbers update automatically as you type

Estimated savings: $1,283/month in Des Peres, MO

$150,000 in your current city has a modeled equivalent of $134,603 in Des Peres, MO

Regional cost estimates: Northfield, IL uses Chicago, IL. Des Peres, MO uses St. Louis, MO. Available city ZIP rent estimates are shown separately.

Overall Cost

↓ 14.1%

Less expensive

Monthly Impact

$1,283

Savings

Annual Impact

$15.4K

Per year

Assumes 60% of current gross income goes to living costs. The headline uses the category budget below; taxes, moving costs and savings goals are excluded.

Northfield, IL

Population:6K

Cost Index:

93.5

100 = national average

Typical Home:$1.42M

Des Peres, MO

Population:9K

Cost Index:

80.4

100 = national average

Typical Home:$927K

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Northfield, IL

The Prairie State

Population

State Tax

Yes

Located in Illinois, this city has a population of 6K residents.

Des Peres, MO

The Show-Me State

Population

State Tax

Yes

Located in Missouri, this city has a population of 9K residents.

Cost Breakdown by Category

Estimated monthly spending: Northfield, IL vs Des Peres, MO

Assumes 60% of your current gross income is spent on these categories. The headline and totals use this same budget. Rent estimates below are separate reference data. Rounded amounts may differ by $1.

Category	Northfield, IL	Des Peres, MO	Difference	Change
Housing	$2,435/mo	$1,586/mo	↓ $848less	34.8%
Transportation	$1,482/mo	$1,145/mo	↓ $337less	22.7%
Healthcare	$564/mo	$516/mo	↓ $47.96less	8.5%
Groceries	$976/mo	$930/mo	↓ $45.76less	4.7%
Other	$1,551/mo	$1,514/mo	↓ $36.68less	2.4%
All Utilities	$492/mo	$525/mo	↑ $32.50more	6.6%

Housing

↓ 34.8%

Northfield, IL

$2,435

Des Peres, MO

$1,586

Difference

$848

less

Transportation

↓ 22.7%

Northfield, IL

$1,482

Des Peres, MO

$1,145

Difference

$337

less

Healthcare

↓ 8.5%

Northfield, IL

$564

Des Peres, MO

$516

Difference

$47.96

less

Groceries

↓ 4.7%

Northfield, IL

$976

Des Peres, MO

$930

Difference

$45.76

less

Other

↓ 2.4%

Northfield, IL

$1,551

Des Peres, MO

$1,514

Difference

$36.68

less

All Utilities

↑ 6.6%

Northfield, IL

$492

Des Peres, MO

$525

Difference

$32.50

🏠Rent Comparison

Studio

From$2,000

To$1,440

↓ $560

1 Bed

From$2,140

To$1,490

↓ $650

2 Bed

From$2,410

To$1,830

↓ $580

3 Bed

From$3,100

To$2,360

↓ $740

Northfield, ILZIP-level data

1BR range: $2,140–$2,140/mo

Des Peres, MOZIP-level data

1BR range: $1,490–$1,490/mo

💡 Note: HUD Fair Market Rents estimate 40th-percentile gross rents, including most tenant-paid utilities. City ZIP summaries are medians of those estimates, not market median rents. Actual prices vary by neighborhood, amenities, and condition. Source: HUD Small Area Fair Market Rents FY2026.

$7,500

Monthly in Northfield, IL

$6,217

Monthly in Des Peres, MO

$1,283

Difference

Home Values

Northfield

Des Peres

$1.42M

Median Value

$927K

↑ +10.7%

YoY Change

↑ +4.7%

↑ +52.9%

5-Year Change

↑ +39.5%

Homes in Des Peres are 35% less expensive than Northfield

Calculate payment - Northfield Calculate payment - Des Peres

Source: Zillow Home Value Index (ZHVI), January 2026

Tax Comparison

Annual tax burden comparison at $150.0K salary

Tax Savings

↓ $504

More taxes

Monthly Difference

$42.00

Less take-home

Effective Rate Diff

0.3%

Rate difference

Northfield, IL

Federal Income Tax

Effective: 18.9%

$25.5K

Illinois State Tax

Effective: 5.0%

$7.4K

FICA Taxes

Social Security + Medicare

$11.5K

Total Taxes

Effective: 29.6%

$44.4K

Take-Home Pay

$8,797/month

$105.6K

Des Peres, MO

Federal Income Tax

Effective: 18.9%

$25.5K

Missouri State Tax

Effective: 5.3%

$7.9K

FICA Taxes

Social Security + Medicare

$11.5K

Total Taxes

Effective: 30.0%

$44.9K

Take-Home Pay

$8,755/month

$105.1K

Additional Tax Information

Northfield, IL Tax Rates

Sales Tax:8.8%

Property Tax:2.2%

Des Peres, MO Tax Rates

Sales Tax:8.2%

Property Tax:1.0%

💡 Note: Tax calculations are estimates based on 2024/2025 tax brackets for single filers with standard deduction. Actual taxes may vary based on filing status, deductions, credits, and local variations.

Environment

Northfield

Des Peres

54 Moderate

Air Quality

54 Moderate

35.8%

Good Air Days

38%

100 Very High

Climate Risk

99 High

🌊🌡🫨

Top Hazards

🌊🌡🫨

▲+3.2°F

2050 Outlook

▲+3.0°F

18 days

Heat Days >95°F

39 days

▲+3.2°F

2050 Outlook

▲+3.0°F

18 days

Heat Days >95°F

39 days

Before moving from Northfield, IL to Des Peres, MO

Use this comparison to shortlist a move, then check the costs that depend on your household.

Compare actual homes. Get current quotes in Des Peres, MO for the same bedroom count and included utilities as your home in Northfield, IL. Add parking, deposits, insurance and any overlapping leases. The rent estimates above are a starting point, not available listings.
Confirm your income. Check your expected pay with your employer, including any location adjustment. Use “Different salary at destination?” above to compare two incomes. The budget model excludes taxes and one-time moving costs; it is not a take-home-pay calculation.
Price your daily routine. Check the commute from a specific address to work, school or childcare. Add household expenses missing from this model, such as childcare, debt payments and medical needs. Verify local services before signing a lease.
Plan the transition. Get moving quotes and budget for travel, setup costs and time off. Open your Northfield to Des Peres moving checklist to organize the tasks and timing.

Still choosing a destination? Explore cities similar to Des Peres, MO by cost, housing, population and region.

Frequently Asked Questions: Northfield, IL vs Des Peres, MO

How do the cost estimates for Northfield, IL and Des Peres, MO compare?

Des Peres, MO has a modeled overall cost index 14.1% lower than Northfield, IL. This is a broad model comparison, not a survey of today's prices or a forecast of your household spending. Some cities use adjusted regional fallback data.

What does the equivalent salary mean?

At a $150,000 salary in Northfield, IL, the model estimates $134,603 in Des Peres, MO. It allocates 60% of gross income to the origin city’s category budget and applies each destination category’s relative cost. The equivalent salary adds the total category difference to your income. The monthly difference is the same category difference divided by 12; it is not take-home pay or guaranteed savings. Household size, childcare and your actual lease are not inputs to this calculation.

What rent estimates are available for Northfield, IL and Des Peres, MO?

The modeled two-bedroom rents are $2,410/month in Northfield, IL and $1,830/month in Des Peres, MO. Where available, the source is a city median of HUD FY2026 ZIP-level estimates; otherwise a saved metro table is used. City adjustments may also apply. These are not asking rents or available listings. Compare actual properties with the same bedroom count and included utilities.

How should I use this comparison before moving?

Use it to shortlist locations, then replace modeled costs with a current housing quote, employer-confirmed income, commute costs, insurance and your household's other expenses. Add one-time moving costs separately. Source years differ and the saved datasets are not a live price feed. Read the methodology for the formulas and fallback rules.

💰 See how taxes change too — compare take-home pay between Illinois and Missouri on TaxTakeHome.com