Properties in DeKalb County’s cities are gaining far more value than those in unincorporated areas, according to the county’s mid-year budget.

The taxable value of city properties is expected to increase 13.1 percent this year, while the taxable value of unincorporated properties is up only 0.6 percent. Countywide, taxable property values are growing 5.9 percent this year.

“This growth is phenomenal and an indicator that when the newest cities were developed, the best properties were included,” wrote Interim DeKalb CEO Lee May in a letter to county commissioners Thursday.

Since 2008, the cities of Dunwoody and Brookhaven have formed, bringing the total number of cities in DeKalb County to 11.