State Overview

Idaho has a total population of 1.91M residents. The state comprises 44 counties. The private insurance penetration rate is 68.8%, calculated from the privately insured total of 1.31M out of the total population. The estimated members covered by Gemstone Holdings Group, the top payer, is 454.0K.

Gemstone Holdings Group is the leading insurer in Idaho, commanding over a third of the market. UnitedHealth Group and Cambia Health Solutions Inc also hold significant shares, making them key players in the state's insurance landscape. The top three insurers collectively cover more than half of Idaho's privately insured population.

The remaining insurers in the top ten contribute smaller shares, with IHC Inc Group, Molina Healthcare Inc Group, and PacificSource Health Plan Group rounding out the mid-tier. National brands such as CVS Group, Humana Group, and Cigna Health Group are present but have more modest market positions. Delta Dental Plan of Idaho Inc completes the top ten, reflecting the inclusion of dental coverage within the broader insurance market.

Overall, Idaho's health insurance market is highly concentrated, with the top ten insurers accounting for nearly 90% of the market. This concentration shapes the competitive dynamics and coverage options available to residents.

Insured Population Demographics

The majority of Idaho's privately insured population is covered through employer-based plans, accounting for nearly two-thirds of all privately insured residents. Direct-purchase coverage represents a smaller but significant portion, while TRICARE and CHIP/subsidized programs cover a modest share of the population.

Idaho's insured population is distributed across all age bands, with the largest segment in the 6-18 age group. The presence of CHIP/subsidized coverage highlights the importance of public programs for children and lower-income families. The demographic profile suggests a relatively young population, with substantial coverage among working-age adults and families.

Market Dynamics

Idaho's health insurance market is characterized by a high degree of concentration among a few dominant payers. Gemstone Holdings Group leads the market with a substantial share, followed by UnitedHealth Group and Cambia Health Solutions Inc. Together, the top three insurers account for over 63% of the market, indicating limited competition among smaller payers.

The cumulative market share of the top ten insurers exceeds 89%, underscoring the dominance of established national and regional players. This concentration may influence plan offerings, pricing, and network design across the state. The presence of both national brands and regional insurers reflects a blend of local and national market dynamics.

Demographically, Idaho's privately insured population is primarily covered through employer-based plans, with direct-purchase options and public programs like CHIP and TRICARE playing supporting roles. The age distribution shows a strong presence of children and working-age adults, suggesting a focus on family and employment-driven coverage.

Overall, Idaho's insurance landscape is shaped by a concentrated payer environment and a demographic profile that emphasizes employer-based coverage and a relatively young population. These factors contribute to the state's unique market structure and coverage patterns.