Pet ownership costs $681 more per year in California than in Oklahoma, a gap that adds up to more than $8,100 over a pet's lifetime (based on a 12-year lifespan). Americans in Oklahoma spend $2,462 annually on a dog and cat combined, while Californians pay $3,143.
But raw costs aren't the whole picture. Mississippi pet owners spend 5% of their household income on pets, making it the least affordable state despite moderate costs. Utah is the most affordable at 2.5%.
MoneyGeek analyzed annual pet ownership costs across all 50 states and Washington, D.C., covering six expense categories: veterinary care, pet insurance, food, boarding, grooming and licensing. Dog costs carry a 60% weight and cat costs 40% in the composite rankings, since more U.S. households own dogs than cats
Great Plains and Midwest states take nine of the 10 most affordable spots. West Coast and Northeastern states dominate the expensive end. The national average runs $2,752 annually.

