How many people are enrolled in Affordable Care Act plans in Mississippi?
Refreshed annually
About 313K in 2026 (based on numbers from open enrollment period, which typically runs from early November to mid-January of the next year). That’s roughly 1 in 9 people, or about 10.6% of Mississippi’s population. Mississippi enrolls more residents than average: enrollment nationally averaged about 6.8%, and Mississippi ranked 5th among all states and Washington, DC.
313K
enrolled in qualified health plans (2026)
10.6%
of the states population enrolled in qualified health plans (2026)
In 2015, 3.5% of Mississippi residents were enrolled in a qualified health plan through the Affordable Care Act (ACA), often called "Obamacare," both inside and outside of government. Enrollment rose to 3.6% in 2016; by the 2022 plan year, the first open enrollment period after the temporary expansion of ACA tax credits, it went up to 4.9%. The largest year-over-year increase occurred between 2023 and 2024, when enrollment grew by 3.5 percentage points, before peaking in 2025 at 11.5%.
In 2026, the share of Mississippi's population enrolled in an ACA health plan was 3.8 percentage points higher than the national average.
Estimated share of the population enrolled in qualified health plans, by year
How many ACA enrollees in Mississippi are new to the marketplace?
Enrollment changes reflect both new people buying ACA insurance for the first time and returning customers re-enrolling. In Mississippi, re-enrollees made up a larger share of enrollment than new consumers starting in 2016 — a trend that continued through 2026. In 2026, re-enrollees accounted for 80.1% of enrollment, while new consumers made up 19.9%.
In 2026, 80.1% of ACA enrollees in Mississippi were returning consumers, while 19.9% were new to the marketplace.
Share of qualified health plan enrollment in Mississippi by new consumers and re-enrollees, 2015–2026
How many enrollees in Mississippi receive ACA financial assistance?
There are several mechanisms that can lower the costs of ACA plans. Eligible individuals can apply for an Advance Premium Tax Credit (APTC) to reduce their monthly premiums; at year's end, their actual income determines whether they must repay excess credit or receive additional funds. There are also cost-sharing reductions that lower deductibles, copayments, out-of-pocket maximums, and coinsurance.
In Mississippi, 95.4% of the people enrolled in qualified health plans received an APTC and/or cost-sharing reduction in 2026, 8.7 percentage points more than the national rate of 86.7%.
In 2026, 95.4% of ACA enrollees in Mississippi received financial assistance.
Percentage of people enrolled in qualified health plans receiving APTC and/or CSRs, 2026
What is the average APTC in Mississippi?
The average APTC in Mississippi was $718, higher than the national average of $650 by $68, a 10.5% difference.
In 2026, Mississippi's average APTC was 10.5% higher than the national average.
Average APTC among consumers receiving APTC, 2026
How much do APTCs reduce monthly premium costs in Mississippi?
APTCs lowered the average 2026 premium in Mississippi from $816 to $131, a reduction of $685, or roughly 83.9%.
In Mississippi, 2026 APTCs reduced the statewide average premium from $816 to $131.
Average premium and average premium after APTC in Mississippi, 2026
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Methodology
USAFacts standardizes data, in areas such as time and demographics, to make it easier to understand and compare.
Page sources
USAFacts endeavors to share the most up-to-date information available. We sourced the data on this page directly from government agencies; however, the intervals at which agencies publish updated data vary.