Obesity Rate by State

Colorado's 25.0% obesity rate, the lowest in the country, is shaped by a culture of outdoor recreation built into the state's geography and population. With 53 peaks above 14,000 feet and access to skiing, hiking, climbing, and cycling throughout the year, Colorado attracts and retains residents who prioritize physical activity. The state has the highest rate of residents meeting federal physical activity guidelines.

Demographics reinforce the pattern. Colorado has the highest share of college-educated adults at 46.4%. College education correlates with lower obesity rates nationally, driven by both income access enabling healthier food choices and higher health literacy. The state is also relatively young, with a median age below the national average, and obesity rates rise with age in every state.

Eight of the ten states with the highest obesity rates are in the South: West Virginia, Mississippi, Louisiana, Alabama, Arkansas, Oklahoma, Tennessee, and Kentucky. The concentration tracks closely with the poverty map, all eight are also among the twenty highest-poverty states. Limited access to fresh food, fewer recreational facilities, lower rates of health insurance, and food assistance programs that don't always provide access to nutritious options all contribute.

The pattern has persisted for decades. In 1990, no state had an obesity rate above 15%. By 2023, no state was below 20%, and the Southern cluster had pulled furthest from the national trajectory. States that expanded Medicaid and invested in community health programs have seen some improvement, but the geographic concentration remains.

State obesity rates come from the CDC's Behavioral Risk Factor Surveillance System (BRFSS), an annual telephone survey of more than 400,000 adults. Respondents self-report their height and weight, which are used to calculate BMI. Adults with a BMI of 30 or higher are classified as obese. Self-reported data tends to understate obesity because people typically underreport weight and overreport height.

Clinical measurements from electronic health records consistently show higher obesity rates than self-reported surveys, suggesting all state figures may understate the true prevalence. Response rates also vary by state and demographic group. Rural, lower-income, and older adults respond at lower rates in some states, potentially affecting the accuracy of state-level estimates.