There were 122,000 hucksters in the United States when the census last checked on them in 1970. What's a huckster? Well, we all have our own definitions, no doubt, and know a few people to fit it, but to the census it means "people who have stands on the sidewalk, door-to-door salesmen, vendors, Good Humor drivers, housewives who sell Avon and Tupperware -- anyone who's selling things and doesn't have a fixed business address," according to John Priebe, a supervising statistician in the Census Bureau's population division. The Census Bureau has been counting hucksters since the 19th century, so it's possible to chart their changing fate in American. There appears to have been a huckster boom in the early years of this century; in 1910 there were 80,000 of them, but later they fell on bad times and by 1950 there were only 24,000. More recently, there has been an upturn in hucksterism, almost entirely among women. There were 38,000 female hucksters in 1960 and 96,000 in 1970. But by next year, they'll all be gone, transformed in the 1980 census into "street and door-to-door salesworkers." The term huckster, said Priebe, "is kind of outmoded."