The number of foreclosure filings issued for homes in Northern Colorado dropped in January, with Boulder County foreclosure filings declining 21% from the previous month, according to a report from the Colorado Division of Housing. Boulder County -- an affluent community about 30 miles north of Denver and home to the University of Colorado -- had 75 properties enter the foreclosure process in January, compared to 95 properties in December, the state agency reported. Also in January, 52 Boulder County properties were sold at auction, an increase of 4% percent from the previous month. As for Northern Colorado, the Colorado Division of Housing noted a substantial improvement in the overall foreclosure situation, with foreclosure filings dropping in Weld and Larimer Counties. The two counties house the cities of Greeley and Fort Collins. Filings in Weld County fell 3.6% between December and January and 10.8% on a year-over-year basis. Meanwhile, foreclosure filings in Larimer dropped 19.5% between December and January and 12.4% on a year-over-year basis. Overall, January foreclosure auction sales in Colorado's most populated counties -- or counties featuring metropolitan areas -- fell to an eight-month low. Write to Kerri Panchuk.