Is Mercer Island safe?
Mercer Island is among the safest places of its size. It ranks safer than 87% of US cities with 25,000+ residents on reported crime per person, based on FBI Crime Data Explorer figures for 2025.
MkaeSense Safety IndexOut of 100. Higher is safer. Ranked 170 of 1274 US cities with 25,000+ residents, where 1 is safest.
How Mercer Island compares
Every dot is one of the 1274 US cities with 25,000+ residents. Further right means more break-ins per person.
Mercer Island's break-in rate of 1.7 per 1,000 residents is higher than 57% of US cities with 25,000+ residents. The Washington average is 3.2 and the US average is 2.0.
Month by month
Reported offences each month, per 1,000 residents, compared with Washington and the national rate.
When and how often cases are solved
Break-in clock
Average share of each year's break-ins by month.
Cases cleared in 2025
Share of reported offences police marked as cleared, usually by an arrest or charge.
Nearby places
Safety Index for the closest places we cover. Higher is safer.
Protect your home in Mercer Island
Picked for Mercer Island's biggest gap against the US average: break-ins.
Common questions
Is Mercer Island a safe place to live?
Mercer Island is among the safest places of its size. Its MkaeSense Safety Index is 87 out of 100, which means it ranks safer than 87% of US cities with 25,000+ residents on reported crime per person. Safety also varies a lot between neighbourhoods, so check the area you're looking at.
How common are break-ins in Mercer Island?
Police recorded 44 break-ins in 2025, or 1.7 per 1,000 residents. The US rate was 2.0 per 1,000.
Is car theft a problem in Mercer Island?
There were 9 vehicle thefts in 2025, 0.36 per 1,000 residents, against 2.0 per 1,000 nationally. That is higher than 10% of US cities with 25,000+ residents.
How is the Safety Index calculated?
We rank each place against others in the same country by its rate per person of violent crime (half the weight) and of property crime: break-ins, car theft and theft (the other half). The index is the share of places with a higher combined score. Where a police service did not report car thefts, its property crime is ranked on break-ins and theft only. It uses police-reported crime only, which depends on how often residents report. Full method, sources and a worked example.
Source: FBI Crime Data Explorer, offences reported by the Mercer Island Police Department, January 2022 to June 2026. Theft means larceny-theft. Clearance figures are offences cleared in the same period. Rates per 1,000 residents and the Safety Index are MkaeSense calculations. Police-reported crime does not include crimes that were never reported. MkaeSense is not affiliated with any police service.