District of Columbia
Detail from USA Census 2000

	Estimate	Lower Bound	Upper Bound
PLACE OF BIRTH, CITIZENSHIP, AND YEAR OF ENTRY
Total population	536,497	*****	*****
Native	465,916	461,108	470,724
Born in United States	459,078	454,227	463,929
State of residence	233,489	226,594	240,384
Different state	225,589	217,948	233,230
Born in Puerto Rico, U.S. Island areas, or born abroad to American parent(s)	6,838	5,526	8,150
Foreign born	70,581	65,773	75,389
Naturalized citizen	19,148	16,531	21,765
Not a citizen	51,433	46,650	56,216
Entered 1990 to 2000	40,142	35,312	44,972
Entered before 1990	30,439	27,360	33,518
REGION OF BIRTH OF FOREIGN BORN
Foreign-born population with region of birth reported	70,581	65,773	75,389
Europe	11,073	9,464	12,682
Asia	14,764	11,522	18,006
Africa	9,428	6,697	12,159
Oceania	708	380	1,036
Latin America	33,837	31,433	36,241
Northern America	771	319	1,223
LANGUAGE SPOKEN AT HOME
Population 5 years and over	503,809	502,273	505,345
English only	426,828	422,221	431,435
Language other than English	76,981	72,232	81,730
Speak English less than "very well"	30,009	26,808	33,210
Spanish	40,237	38,297	42,177
Speak English less than "very well"	19,990	17,467	22,513
Other Indo-European languages	18,154	15,367	20,941
Speak English less than "very well"	3,517	2,451	4,583
Asian and Pacific Islander languages	8,735	6,153	11,317
Speak English less than "very well"	3,894	2,251	5,537
Other languages	9,855	7,065	12,645
Speak English less than "very well"	2,608	1,682	3,534
ANCESTRY (TOTAL REPORTED)
Total Population	536,497	*****	*****
Arab	3,823	2,152	5,494
Czech	1,093	671	1,515
Danish	962	510	1,414
Dutch	2,851	2,051	3,651
English	26,744	24,637	28,851
French (except Basque)	6,777	5,507	8,048
French Canadian	734	371	1,097
German	33,073	30,187	35,959
Greek	1,952	1,323	2,581
Hungarian	2,245	1,478	3,012
Irish	30,687	28,037	33,337
Italian	13,204	11,226	15,182
Lithuanian	1,082	605	1,559
Norwegian	2,453	1,765	3,141
Polish	8,012	6,855	9,169
Portuguese	819	372	1,266
Russian	7,891	6,568	9,214
Scotch-Irish	4,804	3,890	5,718
Scottish	5,186	4,168	6,204
Slovak	775	407	1,143
Subsaharan African	13,456	10,235	16,677
Swedish	3,046	2,241	3,851
Swiss	1,257	807	1,707
Ukrainian	938	534	1,342
United States or American	7,508	5,733	9,283
Welsh	1,860	1,274	2,446
West Indian (excluding Hispanic origin groups)	5,955	4,425	7,485

The Census 2000 Supplementary Survey universe is limited to the household population and excludes the population living in institutions, college dormitories, and other group quarters. Data are based on a sample and are subject to sampling variability. The degree of uncertainty for an estimate is represented through the use of a confidence interval. The confidence interval computed here is a 90 percent confidence interval and can be interpreted roughly as providing 90 percent certainty that the true number falls between the lower and upper bounds. School enrollment estimates from the Census 2000 Supplementary Survey will tend to be lower than similar estimates from the 2000 Census and 2000 Current Population Survey because the school enrollment estimates from the Census 2000 Supplementary Survey do not include individuals residing in group quarters, such as college dormitories. 1. An '*' entry in the lower and upper bound columns indicates that too few sample observations were available to compute a standard error and thus the lower and upper bounds. A statistical test is not appropriate. 2. An '**' entry in the lower and upper bound columns indicates that no sample observations were available to compute a standard error and thus the lower and upper bounds. A statistical test is not appropriate. 3. An '-' entry in the estimate column indicates that no sample observations were available to compute an estimate. 4. An '-' following a median estimate means the median falls in the lowest interval of an open-ended distribution. 5. An '+' following a median estimate means the median falls in the upper interval of an open-ended distribution. 6. An '***' entry in the lower and upper bound columns indicates that the median falls in the lowest interval or upper interval of an open-ended distribution. A statistical test is not appropriate. 7. An '*****' entry in the lower and upper bound columns indicates that the estimate is controlled. A statistical test is not appropriate. 8. An 'N' entry in the estimate, lower bound, and upper bound columns indicates that data for this geographic area cannot be displayed because the number of sample cases is too small.