Car Insurance in Star: Rates in a City Doubling in Size

What does the fastest-growing city in Idaho actually look like from behind the wheel? In Star, it looks like a two-lane road built for a town of 11,000 now carrying the traffic of a town pushing past 22,000, with three separate construction crews trying to widen it all at once.

The Fastest-Growing City in Idaho

Star grew 14.8% in 2025 alone, adding roughly 2,700 new residents in a single year and outpacing every other city in the state. That is not a one-year spike, either. Star counted 11,117 residents at the 2020 Census and has since nearly doubled, pulled along by first-time buyers and Ada County families trading a longer Boise commute for cheaper, newer homes.

Insurers do not price a city once and leave it alone. As registered vehicles pile onto the same roads year after year, territory rating tables shift with the claims data — slowly, but they shift.

Highway 44 Is Being Rebuilt Under Traffic

The Idaho Transportation Department is currently widening State Highway 44 through downtown Star from three lanes to five, adding a second through-lane in each direction plus a center turn lane between roughly City Hall and Moyle Avenue. The project is expected to run through the end of 2027, which means years of lane shifts, temporary signals, and merges layered on top of a road that was already straining before the work started.

Construction zones are reliable generators of rear-end and lane-change claims, and a multi-year widening project running straight through town is exactly the kind of corridor risk insurers watch when setting comprehensive and collision pricing.

A New Freeway Interchange Is Rising Nearby

A few miles from that widening project, crews are building an entirely new interchange where SH-44 meets SH-16 — part of what will become Idaho's first new freeway corridor in roughly forty years. It is a long-term fix aimed at pulling regional through-traffic off Star's local streets, but like any major interchange build, it means active construction zones and shifting traffic patterns for drivers passing through in the meantime.

Two major infrastructure projects running at once, in a city this size, is unusual. It is also a fairly direct sign of how far behind the roads had fallen relative to the rooftops.

New Subdivisions, Different Pricing

Much of Star's growth has landed in new subdivisions ringing the city's south and east edges, closer to SH-16 than to the older neighborhoods near the Boise River. Carriers do not price a city as one flat number — they price down to the block, weighing traffic density and claims history for that specific stretch of road.

A new-construction home near one of those recent developments can quote differently than a longer-established address downtown, even for two drivers with identical records. It is worth re-quoting after any move within Star rather than assuming your old rate carries over.

Before You Renew in Star

• Raise liability past 25/50/15: a fast-growing city means more vehicles on the road and higher odds of a multi-car claim.
• Keep collision coverage through 2027: the SH-44 widening and SH-16 interchange work will both run for years, not months.
• Re-quote after you move within Star: pricing can shift block by block as new subdivisions fill in.
• Compare at least three carriers: rate tables in a city changing this fast do not stay accurate for long.

Not sure the state minimum is enough for your situation? Our minimum vs. full coverage guide walks through the tradeoffs before you sign a renewal.