Oregon · Population 11,176 · Updated March 2026
How far your income goes in Monmouth
State-level tax rates that affect your costs
Monmouth has a cost of living close to the national average, offering a balanced mix of expenses and amenities. With a cost index of 96 (where 100 equals the national median), Monmouth residents can expect to pay median rent of $1,137/month while earning a median household income of $66,858/year.
The median home value in Monmouth, OR is $380,500, with typical monthly owner costs around $1,216 including mortgage, insurance, and taxes. The median rent-to-income ratio of 20.4% means housing is relatively affordable here — well below the 30% threshold that HUD considers cost-burdened.
Oregon's top income tax rate of 9.9% is among the highest in the nation, adding to the overall cost burden. Combined with a 0% sales tax rate and 0.93% effective property tax rate, the overall tax environment is a factor in the total cost of living in Monmouth.
Common questions about living costs in Monmouth