HAMMOND, a city of Lake county, Ind., U.S.A., on Lake Michigan and the Grand Calumet and the Little Calumet rivers, 18m. S.E. of the Chicago "Loop." It is on 9 marked highways, including Federal route 41 and the Indianapolis boulevard, the main thoroughfare into Chicago from the south-east, over which 25,00o vehicles pass daily; it is served by the Chesapeake and Ohio, the Chicago, Indianapolis and Louisville, the Erie, the Michigan Central, the New York Central, the Nickel Plate and the Pennsylvania railways and by four industrial belt lines. Two miles south is the Hammond Ford air-port (1,44oac. of level ground, thoroughly equipped and lighted) from which there is regular freight, passenger and mail service to Detroit and Chicago. The population was 36,004 in 192o (22.5% foreign-born white) and was 64,56o in 193o by the Federal census. Hammond is one of the fast growing cities in the important industrial district around the foot of Lake Michigan known as the Calumet region. It has an area of 27 sq.m., and directly adjoins the cities of Whiting, East Chicago and Calumet city. Manufacturing industries had an output in 1925 valued at Chief among them are the building of freight and passenger railroad cars, which employs 3,00o men, steel fabrication, oil refining, printing and book-binding, and the manufacture of railroad equipment, chemicals, surgical instruments, prepared stock-feeds and pianos. Several railroads have repair shops here, and there are large iron and brass found ries. A steel plant (designed to employ 15,000 men) is under construction (1928) on a 1,30oac. site. Clearings in 1927 amounted to $298,404,000, and the assessed valuation of property was $85, Hammond dates from 1868, when George H. Hammond of Detroit established a packing plant here. The settlement at first was called State-Line, but in 1873 the name was changed to honour Hammond. It was chartered as a city in 1883. In 1890 the population was 5,428. By 1900 it was 12,376, and Hammond had become the principal slaughtering and meat-packing centre in Indiana. A little later the removal of one plant caused the loss of this position and a temporary reduction in the aggregate volume of manufacturing, but this was more than compensated after 1905 by the establishment of new industries to which the present devel opment is due. In 1910 the population had reached 20,925, and in the following decade it increased 72%. The factory output increased 147% in the ten years between 1915 and 1925.