Washington-Arlington-Alexandria vs Boulder

Cost of living comparison based on BEA Regional Price Parities. Boulder is 3.4% less expensive than Washington-Arlington-Alexandria.

What This Comparison Actually Tells You

The Bureau of Economic Analysis indexes Washington-Arlington-Alexandria, DC-VA-MD-WV at an overall Regional Price Parity of 108.9 and Boulder, CO at 105.2, using the U.S. national average of 100 as the reference point. That puts Boulder 3.4% less expensive than Washington-Arlington-Alexandria on a blended basket of goods, services, and rents. The raw index gap of 3.7 points matters more than the headline comparison because it flows directly into salary-equivalent math that families use for relocation, job offers, and remote-work arbitrage decisions.

Inside the breakdown, Washington-Arlington-Alexandria indexes goods at 104.8, services at 106.7, and rents at 151.1, while Boulder comes in at 96.1, 82.7, and 157.0 on the same three categories. The rent line carries the largest weight in the BEA methodology, so a metro with a higher rent index almost always ends up more expensive overall - Boulder carries the heavier rent load here, and that tends to dominate household budget experience on the ground.

In salary terms, a $100,000 income in Washington-Arlington-Alexandria has the same purchasing power as $96,618 in Boulder based on these indexes. The two metros serve populations of roughly 6,263,796 (Washington-Arlington-Alexandria) and 328,317 (Boulder), and median household incomes are $123,896 versus $102,772 respectively - so the right way to read this comparison is never the index alone, but the ratio of your expected local salary to the rent and services mix. For any serious relocation or remote-work decision, pair this BEA comparison with BLS occupation-specific wage data, HUD Fair Market Rent tables, and state tax treatment before committing.

Washington-Arlington-Alexandria
108.9
Cost Index
Boulder
105.2
Cost Index

Category Breakdown

Category Washington-Arlington-Alexandria Boulder Difference
Overall 108.9 105.2 -3.7
Goods 104.8 96.1 -8.8
Services 106.7 82.7 -24.0
Rents 151.1 157.0 +5.9

Visual Comparison

Overall
Washington-Arlington-Alexandria
108.9
Boulder
105.2
Goods
Washington-Arlington-Alexandria
104.8
Boulder
96.1
Services
Washington-Arlington-Alexandria
106.7
Boulder
82.7
Rents
Washington-Arlington-Alexandria
151.1
Boulder
157.0

Vertical line = national average (100)

Salary Equivalents

What a salary in Washington-Arlington-Alexandria would need to be in Boulder for the same purchasing power:

In Washington-Arlington-Alexandria In Boulder Difference
$50,000 $48,309 $-1,691
$75,000 $72,464 $-2,536
$100,000 $96,618 $-3,382
$150,000 $144,928 $-5,072

Use the salary calculator for custom amounts.

Metro Context

Metric Washington-Arlington-Alexandria Boulder
Population 6,263,796 328,317
Median Income $123,896 $102,772
Data Year 2024 2024

Frequently Asked Questions

Is Boulder more expensive than Washington-Arlington-Alexandria?
Boulder is 3.4% less expensive than Washington-Arlington-Alexandria. The overall cost index is 105.2 vs 108.9 (national average = 100).
What salary in Boulder equals $100K in Washington-Arlington-Alexandria?
A $100,000 salary in Washington-Arlington-Alexandria has the same purchasing power as $96,618 in Boulder. This is based on the BEA Regional Price Parity indexes.
How do rents compare between Washington-Arlington-Alexandria and Boulder?
Rents in Washington-Arlington-Alexandria are indexed at 151.1 while Boulder is at 157.0 (national average = 100). Boulder has higher rents.

Source: Bureau of Economic Analysis, Regional Price Parities (2024). Index where national average = 100.

Data sourced from official public datasets. See our methodology for details. Retrieved and formatted by PlainCost Editorial

Every figure on PlainCost is rendered directly from BEA Regional Price Parity source data, no number is typed in by an editor. This page draws directly on BEA Regional Price Parity source data, no figure is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, our changelog, or report a data error. Data current as of 2026-05-15. Rankings measure the published cost-of-living index only; we don't recommend where to live or rate any metro's quality of life.