Washington is one of the most expensive states for real estate based on price per square foot, a recent study from PortlandRealEstate.com found. 

The website analyzed average home prices and average home sizes in each state to come up with its rankings.

Washington was No. 6 overall, with an average price per square foot of $315. 

Hawaii had the highest price per square foot, at an average of $681. West Virginia had the least expensive price per square foot, at $133.

The top 10 most-expensive states for real estate, based on average price per square foot, according to the study:

1. Hawaii, $681 per square foot
2. California, $425
3. Massachusetts, $417
4. New York, $416
5. Rhode Island, $325
6. Washington, $315
7. New Jersey, $310
8. Montana, $309
9. Oregon, $302
10. Colorado, $287

The five least-expensive states were:

1. West Virginia, $133
2. Mississippi, $142
3. Ohio, $147
4. Kansas, $150
5. Arkansas, $152