Channel-share trends over time tell you where the independent agency channel is heading; the state-level cross-section tells you where it already lives. The two readings come from the same body of industry market-share reporting; the time series is channel-share trends 1995–2019. This is the map.
§ 01 · Why geography is structuralSame revenue, different weather.
The independent agency channel's share is a national average stretched across fifty very different markets. In the strongest commercial states the channel writes nearly nine of every ten commercial dollars; in the weakest, captive and direct carriers hold structural ground the independent channel has never recovered. For an operator or an acquirer, that means two books with identical revenue, mix, and quality can carry different structural risk purely on the basis of the state line they sit behind — different buyer pools, different substitution pressure, different appointment value.
§ 02 · The strongholdsNortheast for personal, Midwest for commercial.
The two lines concentrate in different geographies. Personal-lines independent-agency share peaks in the Northeast — Massachusetts near 69%, then Vermont, Maine, and Connecticut — where the channel's relationship model held against direct response. Commercial-lines share peaks in the Midwest and Plains — Michigan, West Virginia, Hawaii, Kansas, and Oklahoma all near or above 88%. Pennsylvania is the unusual case that ranks in the top ten on both lines, making it the most balanced independent-agency stronghold in the country. Everywhere else, the channel is strong in one line and ordinary in the other.
§ 03 · The widening moatThe commercial concentration deepened.
The most important state-level trend is the deepening of the commercial moat. Over a five-year window, the distribution of states by commercial independent-agency share shifted decisively upward — the number of states writing 85%+ of commercial premium through the channel quadrupled.
| Commercial IA share band | # states (earlier) | # states (5 yrs later) |
|---|---|---|
| 85–90% | 3 | 12 |
| 80–85% | 16 | 28 |
| 75–80% | 23 | 9 |
| 70–75% | 5 | 1 |
Personal lines showed no comparable movement into the high-share bands — the channel held its aggregate personal share but didn't gain ground state-by-state. The commercial moat is widening; the personal-lines position is holding, not advancing. That asymmetry is the same line-mix lesson the time series teaches, now confirmed in the geography.
A national average is a place no agency actually operates. The structural question is never "what is the channel's share" — it is "what is the channel's share in this line, in this state," and the gap between the two can be forty points.
§ 04 · Five archetypesHow the map reads as strategy.
Sorted by both lines, states fall into five recognizable archetypes — and each implies a different acquisition posture. Twin strongholds (high on both lines, like Pennsylvania) suit buyers assembling comprehensive books. Commercial-dominant states (Michigan, Kansas, Oklahoma) suit commercial tuck-in acquirers and specialty assemblers. Personal-dominant states (Massachusetts, Vermont, Florida) are where large independent personal-lines books concentrate — the natural home for fractional and partial-exit activity. Captive-dominated states (much of the Southwest) carry mixed and captive-orphan books that reward a buyer with a conversion playbook. And the broad mid-tier mixed middle is standard marketplace territory. The structural force underneath all five is the same fragmentation described in pervasive market fragmentation.
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Terminology on this shelf
- State-level IA share
- Share of property-casualty premium written through independent agencies in a given state.
- IA stronghold
- A state where independent agencies hold above ~85% commercial share and/or ~40%+ personal-lines share.
- Captive-dominated state
- A state where independent-agency share sits structurally below the national average on both lines.
- Commercial moat
- The independent channel's durable, widening dominance of commercial lines — the structural strength of the channel.
- Share band
- A range used to group states by channel share — useful for tracking concentration shifts over time.