Rise in Immigrants, Drop in Car-Poolers : Census: 1990 survey shows Orange County has three times more foreign-born residents than nation as a whole. Also, 76.8% of residents here drive to work alone.

New Census Bureau figures show that the foreign-born population of the United States rose dramatically in the 1980s to about 7.9% of all residents, and most of these immigrants are centered in urban areas, where they pose potentially grave problems for educators.

The figures show that Orange County, once a suburban white enclave, now has about three times more foreign-born residents than the nation as a whole. People born in countries other than the United States comprise 23.9% of Orange County’s current population.

The educational problems revolve around languages other than English. Census figures show that of the 2.2 million Orange County residents over 5 years old, nearly one in three speaks a language other than English at home.

The national census statistics show a pronounced move to a multicultural society over the past 10 years, from a point in 1980 when foreign-born residents accounted for only 6.2% of the population. And over the past 25 years, demographers say, the trend in immigration has shifted away from Europeans to people of Latino and Asian ancestry.

The new Census Bureau figures, compiled in the spring of 1990, were derived from a survey taken every 10 years that produces a range of information about the characteristics, habits and lifestyles of Americans.

This survey of 17.7 million homes also showed, for example, that nearly three-quarters of American commuters drove to work alone in 1990, rejecting car pools and mass transit. The figures revealed that nearly 60% of mothers with children younger than 6 were in the labor force, an increase from 45.7% a decade earlier. And only 4.8% of American households were without telephones, down from 7.1% in 1980.

Across the nation, 19.7 million residents in 1990 were foreign-born, the latest statistics show. Almost 32 million people speak foreign languages at home, with more than 40% of those reporting that they “do not speak English very well.” The rise in households where foreign languages are spoken amounted to almost 3% over the last 10 years.

Peter Morrison, a demographer at the RAND Corp., a Santa Monica think tank, said the influx of immigrants means that schools in Los Angeles and Orange counties and other urban areas, where most foreign-born residents have settled, face the daunting task of training many non-English speakers for employment and contributing roles in society.

“The changing role for the education system is a serious problem,” Morrison said.

Shifting patterns of immigration showed the number of immigrants from Mexico, for example, more than doubled to 4.4 million over the decade. A parallel steep increase was reflected in the new total of 5.4 million immigrants from Asia.

While most of these new arrivals found homes in such cities as Los Angeles, Chicago, Washington and Miami, there was scant impact in the Midwest, where less than 4% of all residents are foreign-born.

Southern California, including Orange County, had a dramatic increase in foreign-born residents in the past decade. The census showed that 55.9% of the foreign-born residents in Orange County came to the United States between 1980 and 1990.

Figures for the Census Bureau’s Pacific Division, including California, Washington, Oregon, Hawaii and Alaska, showed the foreign-born population was 7.1 million in 1990, with almost half entering the United States during the previous decade.

About 5.7 million in the region spoke Spanish at home, and 2.3 million spoke an Asian or Pacific Island language.

The rise in one-in-a-car commuters, up to 73.2% from 64.4% in 1980, and the accompanying decline in car-pooling (now 13.4% of drivers) and mass transit use (now only 5.3% of commuters) was not unexpected, authorities said. They attributed the shifting patterns to companies moving to less centralized locations, drops in gasoline prices, cuts in federal transit subsidies and an increase in working couples.

Said Mark Wright of the Assn. for Commuter Transportation:

“It’s easier to match people up for car pools if they’re going to predictable places at predictable times. But as people move to find affordable housing while their workplaces move to the suburbs, they may find it more difficult to car-pool.”

In Orange County, the new census figures showed that 76.8% of county residents drive alone to work, and only 2.4% use public transit to get to their jobs.

Use of public transit declined nationally, and some attributed it to budget cuts.

Chip Bishop of the American Public Transit Assn. said “the 1980s were not kind years to public transit,” explaining that there was a 50% cutback, after inflation, in federal aid for construction and operation of mass transit systems from 1980 to 1990.

However, Wright and Bishop said the outlook was bright for the car pools and mass transit. They credited adoption of the Clean Air Act of 1990 and the Intermodal Surface Transportation Efficiency Act last year, which, according to Bishop, “shifted the focus away from road building toward ride-sharing.”

There was less encouraging news, however, for the economic well-being of families.

About 42% of households lived on incomes below $25,000, up from 31% a decade earlier. As poverty rates grew, housing costs shot up. According to the census, median mortgage costs rose 27% in 10 years to $737 a month. Median rents rose 16% to $581.

In Orange County, the census figures showed that the median mortgage cost, as of 1990, was $1,317 a month--almost $600 a month higher than the national average. The Orange County median rent, as of 1990, was $790 a month, about $200 higher than the national median rent.