A total of 312 companies based in the D.C. area made it on Inc. magazine’s latest annual list ranking the 5,000 fastest-growing companies in the U.S.

But only 29 D.C.-area companies made the prestigious top 500 rankings, down from 52 on last year’s top 500 list.

The Inc. 5000 list ranks private companies based on the percentage of revenue growth over the most recent three-year period. All told, a total of 462 companies based in D.C., Maryland and Virginia were included on this year’s list.

The highest-ranking locally-based company is Sterling, Virginia-based Gravy Analytics, at No. 93. Founded in 2011, its software is used by companies for mobile, location-based marketing. The magazine lists Gravy Analytics’ three-year revenue growth at 3,623%.