
to earlier centuries, the 20th century witnessed a rapidly accelerating
population growth and an acceleration of the rural-to-urban migration,
which fueled this shift in power and focus.
Demographic Changes
Between 1876 and 1940 Peru’s population grew from 2.6 million to 6 mil-
lion people. Population growth was largely urban and coastal, whereas
population density in the highlands and the Amazon basin remained low.
In 1906 Alejandro Garland, a distinguished member of the Geographical
Society, calculated that population density in the highlands was higher
(4.78 inhabitants per square kilometer) than on the coast (4.53 per
square kilometer). The Amazon basin had the lowest urban concentra-
tion index at 0.39 per square kilometer. (One square kilometer equals
0.39 square mile.) But a massive rural-to-urban migration began in the
1920s causing a sharp regional shift. In 1940, 65 percent of Peru’s popu-
lation was rural; in 1970 this would drop to 30 percent.
Lima grew from 114,788 inhabitants in 1890 to 172,927 in 1908. By
1908, 58.5 percent of limeños had not been born in Lima. The popula-
tion fur
ther increased to 223,807 in 1920, to 376,097 in 1931, and to
540,100 in 1940. Other cities also saw increases in population, espe-
cially Arequipa, Cuzco, and Trujillo. Most city dwellers, especially in
the smaller cities, lacked electricity and running water, and a single
telegraph often was the only connection to the outside world.
Administrative changes—especially the expansion of the state bureau-
cracy and a higher commitment to hygiene—and, even more impor-
tant, job opportunities in urban centers and political peace promoted
not only the natural growth of the population but also an internal
migration from Peru’s rural areas. The 1940 census registered in Lima
an even gender distribution (49.42 percent men, 50.58 percent women)
and a predominantly young population (50 percent of the population
was 19 years old or younger). The economically active population in
the country numbered 2.5 million people, of whom 62 percent worked
in agriculture or husbandry, 17.5 percent in industry, and 20.5 percent
in services. By 1940, 65 percent of Peru’s population spoke Spanish, and
many were bilingual in Spanish and Quechua.
The 1940 national census was Peru’s last census to register race. It
counted 52.89 percent whites and mestizos, 45.86 percent Indians, 0.47
percent blacks, 0.68 percent “yellows” (that is, Chinese or Japanese),
and a 0.10 percent of “undeclared” race. This racial count was a sur-
prise to many contemporaries. Only 10 years earlier Peru’s intellectuals
A BRIEF HISTORY OF PERU
172