Table 7.—(Continued).
| Rank | 1920 | 1910 | Percentage increase | |
| 116 | Mobile, Ala. | 60,777 | 51,521 | 18.0 |
| 117 | Altoona, Pa. | 60,331 | 52,127 | 15.7 |
| 118 | Holyoke, Mass. | 60,203 | 57,730 | 4.3 |
| 119 | New Britain, Conn. | 59,316 | 43,916 | 35.1 |
| 120 | Springfield, Ill. | 59,183 | 51,678 | 14.5 |
| 121 | Racine, Wis. | 58,593 | 38,002 | 54.2 |
| 122 | Chester, Pa. | 58,030 | 38,537 | 50.6 |
| 123 | Chattanooga, Tenn. | 57,895 | 44,604 | 29.8 |
| 124 | Lansing, Mich. | 57,327 | 31,229 | 83.6 |
| 125 | Covington, Ky. | 57,121 | 53,270 | 7.2 |
| 126 | Davenport, Ia. | 56,727 | 43,028 | 31.8 |
| 127 | Wheeling, W. Va. | 56,208 | 41,641 | 35.0 |
| 128 | Berkeley, Cal. | 56,036 | 40,434 | 38.6 |
| 129 | Long Beach, Cal. | 55,593 | 17,809 | 212.2 |
| 130 | Gary, Ind. | 55,378 | 16,802 | 229.6 |
| 131 | Lincoln, Neb. | 54,948 | 43,973 | 25.0 |
| 132 | Portsmouth, Va. | 54,387 | 33,190 | 63.9 |
| 133 | Haverhill, Mass. | 53,884 | 44,115 | 22.1 |
| 134 | Lancaster, Pa. | 53,150 | 47,227 | 12.5 |
| 135 | Macon, Ga. | 52,995 | 40,665 | 30.3 |
| 136 | Augusta, Ga. | 52,548 | 41,040 | 28.0 |
| 137 | Tampa, Fla. | 51,608 | 37,782 | 36.6 |
| 138 | Roanoke, Va. | 50,842 | 34,874 | 45.8 |
| 139 | Niagara Falls, N. Y. | 50,760 | 30,445 | 66.7 |
| 140 | East Orange, N. J. | 50,710 | 34,371 | 47.5 |
| 141 | Atlantic City, N. J. | 50,707 | 46,150 | 9.9 |
| 142 | Bethlehem, Pa. | 50,358 | 12,837 | 292.3 |
| 143 | Huntington, W. Va. | 50,177 | 31,161 | 61.0 |
| 144 | Topeka, Kan. | 50,022 | 43,684 | 14.5 |
The cities with increases of over 100% were Detroit, Mich., due to the development of the automobile industry; Akron, O., the home of several large rubber factories which manufacture tires for automobiles; Flint, Mich., also an automobile city; Tulsa, Okla., a centre of oil activity; Gary, Ind., a city recently built up by the U. S. Steel Corp.; Bethlehem, Pa., also a steel city; Knoxville, Tenn.; and Long Beach, Cal. With the exception of Bethlehem, no one of these cities is in the east.
Nearly one-fourth of the gain in the total pop. was due to the growth of the 12 largest cities, which in 1920 all had more than 500,000 inhabitants each. In 1910 there were only eight cities with a pop. of 500,000 or over. In the earlier year 12.5%, or one-eighth of the total pop., lived in cities of this size; in 1920 the proportion was 15.5%. In 1910 there were 42 cities with a pop. between 100,000 and 500,000; in 1920 there were 56.
Occupations.—The proportion of the pop. engaged in gainful occupations increased from 38.3% of the total pop. in 1900 to 41.5% in 1910. This was largely due to the greater number of females receiving wages. In 1900 the percentage of females 10 years of age and over in gainful occupations was 18.8; in 1910, 23.4, a gain of 4.6 per cent. The percentages for males for the two dates respectively were 80 and 81.3, a gain of only 1.3 per cent. Table 8 classifies those engaged in industry according to the principal divisions of occupations.
Table 8. Industrial Occupations.
| Occupation | Number | Per cent. | ||
| 1910 | 1900 | 1910 | 1900 | |
| Males:— | ||||
| Agricultural pursuits | 10,760,875 | 9,404,429 | 35.8 | 39.6 |
| Professional service | 1,151,709 | 827,941 | 3.8 | 3.5 |
| Domestic and personal service | 2,740,176 | 3,485,208 | 9.1 | 14.7 |
| Trade and transportation | 6,403,378 | 4,263,617 | 21.3 | 17.9 |
| Manufacturing and mechanical pursuits | 9,035,426 | 5,772,641 | 30.0 | 24.3 |
| All occupations (male) | 30,091,564 | 23,753,836 | 100.0 | 100.0 |
| Females:— | ||||
| Agricultural pursuits | 1,807,050 | 977,336 | 22.4 | 18.4 |
| Professional service | 673,418 | 430,597 | 8.3 | 8.1 |
| Domestic and personal service | 2,620,857 | 2,095,449 | 32.5 | 39.4 |
| Trade and transportation | 1,202,352 | 503,347 | 14.9 | 9.5 |
| Manufacturing and mechanical pursuits | 1,772,095 | 1,312,668 | 21.9 | 24.7 |
| All occupations (female) | 8,075,772 | 5,319,397 | 100.0 | 100.0 |
Table 8 does not include all those engaged in economic services. Many children and wives work for their parents or husbands; technically they do not receive wages and consequently are not recorded as engaged in gainful occupations, but in reality they contribute to the household economy. If these be included, approximately two-thirds of the pop. was engaged in some degree of creating wealth or in services which might be valued in economic terms. Nearly one-third of all the workers were engaged in agricultural and allied industries, and a little over one-fourth in manufacturing and in tool industries. If we divide the pop. of the United States into groups according to age, the following were the percentages of each age-group engaged in gainful occupation in 1910:—10 to 13 years, males 16.6% and females 8.0%; 14 to 15, 41.4% and 19.8%; 16 to 20, 79.2% and 39.9%; 21 to 44, 96.7% and 26.3%; 45 years and over, 85.9% and 15.7%; 10 years and over, 81.3% and 23.4%. There was a slight decrease between 1900 and 1910 in the two lower age-groups for males and a slight increase for females. More than 8 out of 10 of the gainful workers in the United States as a whole in 1910 were 21 years of age and over, and about 95 out of 100 were 16 years of age and over.
Education.—In 1918 there were 20,853,516 children enrolled in the public schools, constituting 70% of the pop. from 5 to 18 years of age. There were 650,709 teachers in the public schools, or one to every 32 pupils. Of the teachers 16% were males. The total expenditure for public schools was $763,678,089 or about $37 per pupil. The above enrolment of pupils includes 1,735,619 attending public high schools. In addition there were 158,745 pupils in private high schools and academies. There were over 300 public and private normal schools with an enrolment of nearly 140,000. Universities, colleges and schools of technology numbered 672 in 1918, having 44,600 students of preparatory grade, 239,707 students of collegiate grade, and 14,406 graduate students. Nearly one-half of the students of collegiate grade were female. Professional schools in 1918 numbered 424, as follows: theology 141, with 9,354 students; law 101, with 11,820 students; medicine 72, with 13,802 students; dentistry 37, with 8,314 students; pharmacy 54, with 4,053 students; and veterinary medicine 19, with 1,250 students. (See Education, section United States.)
The statistics of illiteracy for 1920 showed a diminution compared with those for 1910. The Census Bureau classifies as illiterate any person 10 years of age or over who is unable to write in any language, regardless of ability to read. Illiterates in 1920 numbered 4,931,905, or 6% of the pop. at least 10 years of age, as compared with 7.7% in 1910. The proportion of illiteracy for the individual states in 1920 ranged from 1.1% in Iowa to 21.9% for Louisiana. Illiteracy is very marked in those states in which the colored pop. or the foreign-born pop. is relatively large. In 1910 nearly one-third (30.4%) of the negroes were recorded as illiterate, but this showed a marked decrease from 44.5% in 1900. Of the native whites of native parentage only 3.7% in 1910 were illiterate, but in six of the southern states the percentage ran over 10%.
Vital Statistics.—In 1915 the Census Bureau began the annual analysis and publication of birth statistics based upon data obtained from state registration records. In 1919 the birth registration area covered nearly three-fifths (58.6%) of the total population. The birth-rate varied in the five-year period 1915-9 from 25.1 per 1,000 in 1915 to 22.3 per 1,000 in 1919. The ratio of male births was 1,057 to 1,000 female births. The fecundity of foreign-born mothers was much greater than that of native mothers. For example, in Connecticut, although the white married women of foreign birth, age 15 to 42, constituted only 46% of the total pop. of white married women of that age group, they gave birth to 57% of the children. In Massachusetts 49% of foreign-born mothers gave birth to 53% of the children; and in New York 43% of foreign-born mothers gave birth to 49% of the children. The first and second children formed 50% of all children born to native white mothers, while only 34% born to foreign-born mothers were first and second children.
The registration area for mortality statistics covers more than three-fourths of the population. Between 1900 and 1921 the death-rate varied from a minimum of 13.5 per 1,000 in 1915 to 18 per 1,000 in 1918. This latter high rate was due largely to the great influenza pandemic. The rate of infant mortality (the number of deaths of infants under one year of age per 1,000 born alive) for the registration area in 1918 was 83 for the white pop.; for negro pop., 131; and for the total pop., 87.
A third nation-wide compilation of statistics of marriage and divorce was made by the Bureau of Census, covering the year 1916. There were 1,040,778 marriages, or 10.5 per 1,000 of the population. In some of the southern states the rate ran as high as 11.9 per 1,000. There were 112,036 divorces. The statistics were not analyzed to show ratios of divorce to marriage, but only the ratios to population. For the whole country the ratio of divorce was 112 per 100,000 population. In New England the ratio was 80, Middle Atlantic states 43, Southern states 59, and Pacific states 210. Of the divorces 31.1% were granted to the husband and 68.9% to the wife.
Religious Bodies.—For statistics of Christian churches, see the article Church History: section United States. Statistics of membership in Jewish churches are unsatisfactory for purpose of comparison with other denominations, for they are restricted to heads
