Longmont, CO vs Fairfield, CA: Cost of Living

Which city costs less?

Fairfield, CA has a modeled overall cost index 47.1% higher than Longmont, CO.

Longmont, CO · modeled 2BR rent: $2,050 / month
Fairfield, CA · modeled 2BR rent: $2,180 / 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 Longmont, CO and Fairfield, CA 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 Longmont, CO

Numbers update automatically as you type

Estimated extra cost: $3,544/month in Fairfield, CA

$150,000 in your current city has a modeled equivalent of $192,533 in Fairfield, CA

Regional cost estimates: Longmont, CO uses Denver, CO. Fairfield, CA uses Oakland, CA. Available city ZIP rent estimates are shown separately.

Overall Cost

↑ 47.1%

More expensive

Monthly Impact

$3,544

Extra cost

Annual Impact

$42.5K

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.

Longmont, CO

Population:99K

Cost Index:

104.8

100 = national average

Typical Home:$570K

Fairfield, CA

Population:121K

Cost Index:

154.1

100 = national average

Typical Home:$528K

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Longmont, CO

The Centennial State

99K

Population

State Tax

Yes

Located in Colorado, this city has a population of 99K residents.

Fairfield, CA

The Golden State

121K

Population

State Tax

Yes

Located in California, this city has a population of 121K residents.

Cost Breakdown by Category

Estimated monthly spending: Longmont, CO vs Fairfield, CA

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	Longmont, CO	Fairfield, CA	Difference	Change
Housing	$2,612/mo	$5,412/mo	↑ $2,799more	107.2%
Transportation	$1,306/mo	$1,892/mo	↑ $586more	44.8%
Groceries	$942/mo	$1,051/mo	↑ $109more	11.5%
All Utilities	$475/mo	$406/mo	↓ $68.98less	14.5%
Healthcare	$579/mo	$640/mo	↑ $61.86more	10.7%
Other	$1,586/mo	$1,643/mo	↑ $57.73more	3.6%

Housing

↑ 107.2%

Longmont, CO

$2,612

Fairfield, CA

$5,412

Difference

$2,799

Transportation

↑ 44.8%

Longmont, CO

$1,306

Fairfield, CA

$1,892

Difference

$586

Groceries

↑ 11.5%

Longmont, CO

$942

Fairfield, CA

$1,051

Difference

$109

All Utilities

↓ 14.5%

Longmont, CO

$475

Fairfield, CA

$406

Difference

$68.98

less

Healthcare

↑ 10.7%

Longmont, CO

$579

Fairfield, CA

$640

Difference

$61.86

Other

↑ 3.6%

Longmont, CO

$1,586

Fairfield, CA

$1,643

Difference

$57.73

🏠Rent Comparison

Studio

From$1,520

To$1,560

↑ $40.00

1 Bed

From$1,680

To$1,710

↑ $30.00

2 Bed

From$2,050

To$2,180

↑ $130

3 Bed

From$2,760

To$2,920

↑ $160

Longmont, COZIP-level data

1BR range: $1,540–$1,760/mo

Fairfield, CAZIP-level data

1BR range: $1,710–$1,710/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 Longmont, CO

$11,044

Monthly in Fairfield, CA

$3,544

Difference

Home Values

Longmont

Fairfield

$570K

Median Value

$528K

↓ -3.3%

YoY Change

↓ -3.3%

↑ +20.4%

5-Year Change

↑ +15.2%

$479K - $720K

Price Range

$528K

Homes in Fairfield are 7% less expensive than Longmont

Calculate payment - Longmont Calculate payment - Fairfield

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

Tax Comparison

Annual tax burden comparison at $150.0K salary

Tax Savings

↓ $4.0K

More taxes

Monthly Difference

$336

Less take-home

Effective Rate Diff

2.7%

Rate difference

Longmont, CO

Federal Income Tax

Effective: 18.9%

$25.5K

Colorado State Tax

Effective: 4.4%

$6.6K

FICA Taxes

Social Security + Medicare

$11.5K

Total Taxes

Effective: 29.1%

$43.6K

Take-Home Pay

$8,866/month

$106.4K

Fairfield, CA

Federal Income Tax

Effective: 18.9%

$25.5K

California State Tax

Effective: 7.1%

$10.6K

FICA Taxes

Social Security + Medicare

$11.5K

Total Taxes

Effective: 31.8%

$47.6K

Take-Home Pay

$8,530/month

$102.4K

Additional Tax Information

Longmont, CO Tax Rates

Sales Tax:7.8%

Property Tax:0.5%

Fairfield, CA Tax Rates

Sales Tax:10.5%

Property Tax:0.8%

💡 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

Longmont

Fairfield

55 Moderate

Air Quality

49 Good

35.2%

Good Air Days

53%

95 High

Climate Risk

100 Very High

🌊🌪💨

Top Hazards

🔥🌊🌅

▲+3.3°F

2050 Outlook

▲+1.9°F

28 days

Heat Days >95°F

2 days

▲+3.3°F

2050 Outlook

▲+1.9°F

28 days

Heat Days >95°F

2 days

Before moving from Longmont, CO to Fairfield, CA

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

Compare actual homes. Get current quotes in Fairfield, CA for the same bedroom count and included utilities as your home in Longmont, CO. 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 Longmont to Fairfield moving checklist to organize the tasks and timing.

Still choosing a destination? Explore cities similar to Fairfield, CA by cost, housing, population and region.

Frequently Asked Questions: Longmont, CO vs Fairfield, CA

How do the cost estimates for Longmont, CO and Fairfield, CA compare?

Fairfield, CA has a modeled overall cost index 47.1% higher than Longmont, CO. 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 Longmont, CO, the model estimates $192,533 in Fairfield, CA. 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 Longmont, CO and Fairfield, CA?

The modeled two-bedroom rents are $2,050/month in Longmont, CO and $2,180/month in Fairfield, CA. 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 Colorado and California on TaxTakeHome.com