Pennsylvania
Detail from USA Census 2000

	Estimate	Lower Bound	Upper Bound
PLACE OF BIRTH, CITIZENSHIP, AND YEAR OF ENTRY
Total population	11,847,753	*****	*****
Native	11,355,623	11,320,070	11,391,176
Born in United States	11,227,590	11,189,059	11,266,121
State of residence	9,300,990	9,153,366	9,448,614
Different state	1,926,600	1,777,965	2,075,235
Born in Puerto Rico, U.S. Island areas, or born abroad to American parent(s)	128,033	114,422	141,644
Foreign born	492,130	456,579	527,681
Naturalized citizen	243,388	225,644	261,132
Not a citizen	248,742	219,356	278,129
Entered 1990 to 2000	213,853	184,236	243,471
Entered before 1990	278,277	258,282	298,272
REGION OF BIRTH OF FOREIGN BORN
Foreign-born population with region of birth reported	491,465	456,056	526,874
Europe	165,736	147,678	183,794
Asia	173,603	153,296	193,910
Africa	26,601	19,501	33,701
Oceania	2,417	0	5,354
Latin America	104,859	85,351	124,367
Northern America	18,249	14,556	21,942
LANGUAGE SPOKEN AT HOME
Population 5 years and over	11,123,185	11,108,140	11,138,230
English only	10,270,776	10,212,368	10,329,184
Language other than English	852,409	797,593	907,225
Speak English less than "very well"	329,976	296,865	363,087
Spanish	297,328	261,973	332,683
Speak English less than "very well"	128,504	107,963	149,045
Other Indo-European languages	364,771	331,578	397,964
Speak English less than "very well"	114,210	98,976	129,444
Asian and Pacific Islander languages	132,320	111,230	153,410
Speak English less than "very well"	73,221	57,416	89,026
Other languages	57,990	45,036	70,944
Speak English less than "very well"	14,041	7,319	20,763
ANCESTRY (TOTAL REPORTED)
Total Population	11,847,753	*****	*****
Arab	63,131	46,667	79,595
Czech	53,181	44,662	61,700
Danish	20,121	14,160	26,082
Dutch	318,347	287,581	349,113
English	1,147,538	1,070,326	1,224,750
French (except Basque)	281,541	255,327	307,755
French Canadian	37,792	25,463	50,121
German	3,305,094	3,221,526	3,388,662
Greek	67,308	53,432	81,185
Hungarian	154,104	137,259	170,949
Irish	2,086,557	2,033,521	2,139,593
Italian	1,497,162	1,378,621	1,615,703
Lithuanian	89,822	78,853	100,791
Norwegian	30,196	24,033	36,359
Polish	858,767	815,362	902,172
Portuguese	18,672	10,541	26,803
Russian	222,212	199,298	245,126
Scotch-Irish	279,001	260,381	297,621
Scottish	185,045	164,199	205,891
Slovak	267,649	239,129	296,169
Subsaharan African	41,093	31,749	50,437
Swedish	137,091	99,455	174,728
Swiss	63,554	51,026	76,082
Ukrainian	125,157	112,376	137,938
United States or American	568,942	534,053	603,831
Welsh	202,535	187,751	217,319
West Indian (excluding Hispanic origin groups)	41,789	27,550	56,029

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.