The Latest on Net Internal Migration

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Two months ago, I blogged on net internal migration–the number of nonimmigrants moving into or out of major counties from 2000 to 2005.

Last week, the Census Bureau published its figures for 2006, so I can update the numbers. I've listed first the counties with net positive in-migration, with the totals first for 2000-06 and then for 2005-06. You can see from the latter figures where in-migration is accelerating and decelerating. I've indicated the largest city in each county and the larger metropolitan area of which it is a part. I've also found that I excluded one county from my earlier post (Fort Bend, Texas), which I should have included.

County Biggest City Metro Area 2000-06 2005-06
Riverside, Calif. Riverside Los Angeles 345,465 53,427
Maricopa, Ariz. Phoenix Phoenix 327,292 67,423
Clark, Nev. Las Vegas Las Vegas 259,537 40,425
Collin, Texas Plano Dallas 137,136 26,299
San Bernardino, Calif. San Bernardino Los Angeles 129,156 8,660
Will, Ill. Joliet Chicago 120,831 16,364
Lee, Fla. Fort Myers Fort Myers 117,679 24,201
Pasco, Fla. New Port Richey Tampa 109,189 20,539
Denton, Texas Denton Dallas 98,900 19,771
Fort Bend, Texas SugarLand Houston 98,062 20,697
Palm Beach, Fla. W. Palm Beach Miami 88,806 - 2,006
Hillsborough, Fla. Tampa Tampa 87,790 14,465
Lake, Fla. Taveras N/A 79,889 12,117
Montgomery, Texas Conroe Houston 78,218 14,282
Wake, N.C. Raleigh Raleigh 77,836 23,232
Williamson, Texas Round Rock Austin 76,089 14,870
Gwinnett, Ga. Lawrenceville Atlanta 74,446 14,599
Pinal, Ariz. Casa Grande N/A 70,906 28,448
Loudoun, Va. Leesburg Washington 70,862 7,176
Douglas, Colo. Castle Rock Denver 64,509 9,911
Tarrant, Texas Fort Worth Dallas 60,773 24,481
Polk, Fla. Lakeland N/A 60,337 16,735
Marion, Fla. Ocala N/A 59,978 12,922
Brevard, Fla. Melbourne N/A 57,536 3,386
Volusia, Fla. Daytona Beach N/A 57,053 9,420
Orange, Fla. Orlando Orlando 56,298 5,898
St. Lucie, Fla. Fort Pierce N/A 55,707 11,789
Mecklenburg, N.C. Charlotte Charlotte 54,575 18,126
Kern, Calif. Bakersfield Bakersfield 52,914 11,388
San Joaquin, Calif. Stockton Stockton 52,312 - 2,339
Pima, Ariz. Tucson Tucson 52,138 12,339

Net internal in-migration is accelerating in Arizona and much of Florida, except for Palm Beach County, which has switched to net out-migration, as has San Joaquin County, Calif. (evidently the overflow from the San Francisco Bay area has stopped). Loudoun County, Va., is less of a hot spot now (and the locals have elected a no-growth county board of supervisors), and so is San Bernardino County, Calif., but net internal in-migration into Riverside County, Calif., continues strong–presumably to the desert communities strung out on Highway 111 between Palm Springs and Indio.

There were sharp accelerations of net internal in-migration into Tarrant County, Texas, Wake County, N.C., and Mecklenburg County, N.C.

There has been similar growth in the 20-county Atlanta area, but only one county shows up on this list because the counties are relatively small. One county has fallen off the list altogether: Sacramento, which had a net internal out-migration of 8,019 in 2005-06, reducing its net internal in-migration figure for 2000-06 to 42,991.

Here are similar figures for the counties with net internal out-migration. I've led off with the total for the five boroughs of New York City, each of which is a separate county.

County Biggest City Metro Area 2000-06 2005-06
New York City New York New York 979,274 170,818
Los Angeles, Calif. Los Angeles Los Angeles 749,449 187,098
Cook, Ill. Chicago Chicago 601,808 101,709
Kings, N.Y. Brooklyn New York 351,730 59,982
Queens, N.Y. Queens New York 339,588 56,015
Dallas, Texas Dallas Dallas 228,566 21,177
Santa Clara, Calif. San Jose San Francisco 220,621 19,122
Miami-Dade, Fla. Miami Miami 190,596 22,103
Orange, Calif. Santa Ana Los Angeles 188,186 46,823
Wayne, Mich. Detroit Detroit 182,883 35,539
Alameda, Calif. Oakland San Francisco 153,878 21,271
Bronx, N.Y. The Bronx New York 148,409 29,099
New York, N.Y. Manhattan New York 136,580 23,903
Philadelphia, Pa. Philadelphia Philadelphia 133,861 20,017
Suffolk, Mass. Boston Boston 120,223 18,200
San Diego, Calif. San Diego San Diego 119,636 22,100
Middlesex, Mass. Cambridge Boston 112,742 16,463
Cuyahoga, Ohio Cleveland Cleveland 110,383 22,581
San Francisco, Calif. San Francisco San Francisco 101,397 9,988
Hudson, N.J. Jersey City New York 93,223 17,051
Fairfax, Va. Fairfax Washington 91,350 19,485
Hennepin, Minn. Minneapolis Minneapolis 89,479 11,908
Harris, Texas Houston Houston 83,68 +39,234
King, Wash. Seattle Seattle 62,469 + 4,320
Milwaukee, Wis. Milwaukee Milwaukee 78,260 13,179
Hamilton, Ohio Cincinnati Cincinnati 77,704 12,188
Essex, N.J. Newark New York 76,944 15,721
DeKalb, Ga. Decatur Atlanta 68,573 4,180
Denver, Colo. Denver Denver 68,595 4,927
Nassau, N.Y. Hempstead New York 67,216 15,672
Baltimore City, Md. Baltimore Baltimore 64,168 8,275
Washington, D.C. Washington Washington 60,644 7,094
Allegheny, Pa. Pittsburgh Pittsburgh 59,172 10,148
Westchester, N.Y. Yonkers New York 58,234 10,104
Franklin, Ohio Columbus Columbus 55,127 7,075
Ramsey, Minn. St. Paul Minneapolis 54,346 7,328
DuPage, Ill. Wheaton Chicago 53,483 10,756
Montgomery, Md. Rockville Washington 50,872 8,145

The outflow from the San Francisco Bay area has slowed down, but the outflow from coastal Southern California continues at a very fast rate. Two areas showed a turnaround–Harris County, Texas, where a major factor was the inflow of evacuees from Hurricane Katrina, and King County, Wash., where the tech turnaround has shown an effect similar to that in the Bay Area.

One county dropped off the list: Fulton, Ga. (Atlanta), which had a net internal in-migration of 13,328 in 2005-06, reducing its net internal out-migration in 2000-06 to 49,586. A similar effect, though not a reversal, was seen in the other central county in the Atlanta area, DeKalb, Ga.