Property tax rates are on the rise in 2011.

According to the San Juan County assessor’s office, tax rates on property will increase this year by 9.1 percent, on average, in large part because of a boost in the state levy rate and in local school levies as well.

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The so-called “tax rolls” were certified Feb. 14 by the assessor’s office. County Treasurer Jan Sears anticipates taxpayers will begin receiving notices by this weekend, Assessor Charles Zalmanek noted in a press release.

The state levy accounts for roughly 43 percent of total taxes paid, on average, by property owners in San Juan County. State school levies are submitted each year to the assessor by the state Superintendent of Public Instruction and the Northwest Educational Service District 189.

Property owners on San Juan Island and its nearby outer island will share and pay for an additional rate hike because of a 2010 voter-approved Emergency Medical Services levy increase.