Country classification for the 1980-1990 estimate period (40 categories with 8 regional and total categories that were not used in programming):

1   All Countries, Total
2   North & Central America, Total
    3       Mexico
    4       Cuba
    5       Dominican Republic
    6       El Salvador
    7       Guatemala
    8       Canada
    9       Haiti
    10      Jamaica
    11      Trinidad & Tobago
    12      Other N. & C. American Countries
13  South America, Total
    14      Argentina
    15      Colombia
    16      Ecuador
    17      Peru
    18      Other South American Countries
19	Europe, Total
    20      France
    21      Germany (East & West)
    22      Greece
    23      Ireland
    24      Italy
    25      Netherlands
    26      Poland
    27      Portugal
    28      Spain
    29      U.S.S.R 
    30      United Kingdom
    31      Yugoslavia
    32      Other European Countries
33	Asia, Total
    34      Middle East, Total
    35      Iran
    36      Israel
    37      Other Middle Eastern Countries
38 	South & East Asia, Total
    39      China & Taiwan
    40      India
    41      Japan
    42      Korea
    43      Philippines
    44      Other S. & E. Asian Countries
    45      Africa, Total
46	Oceania, Total
    47      Australia
    48      Other Oceania

Country classification for the 1990 Census (111 categories):

1	Mexico
2	Cuba
3	Dominican Republic
4	Costa Rica
5	El Salvador
6	Guatemala
7	Honduras
8	Nicaragua
9	Panama
10	Other Latin N & C America
11	Canada
12	Belize
13	Bahamas
14	Barbados
15	Haiti
16	Jamaica
17	Trinidad and Tobago
18	Other West Indies
19	Other N and C America
20	Argentina
21	Bolivia
22	Brazil
23	Chile
24	Colombia
25	Ecuador
26	French Guyana, Suriname
27	Guyana
28	Paraguay
29	Peru
30	Uruguay
31	Venezuela
32	Other South America
33	Albania
34	Austria
35	Belgium
36	Bulgaria
37	Czechoslovakia
38	Denmark
39	Finland
40	France
41	Germany (East, West, Berlin)
42	Greece
43	Hungary
44	Ireland
45	Italy & the Vatican
46	Netherlands
47	Norway
48	Poland
49	Portugal
50	Romania
51	Spain
52	Sweden
53	Switzerland
54	United Kingdom
55	Yugoslavia
56	U.S.S.R. (as reported)
57	Baltics (Est.-Lat.-Lith.)
58	Other Northern Europe
59	Other Eastern Europe
60	Other Southern Europe
61	Other Western Europe
62	Europe, not specified
63	Iran
64	Iraq
65	Israel
66	Jordan
67	Lebanon
68	Saudi Arabia
69	Syria
70	Turkey
71	Other Middle East
72	Afghanistan
73	Bangladesh
74	Burma
75	China
76	Hong Kong
77	India
78	Indonesia
79	Japan
80	Cambodia
81	Korea
82	Laos
83	Malaysia
84	Pakistan
85	Philippines
86	Sri Lanka
87	Taiwan
88	Thailand
89	Vietnam
90	Other South and East Asia
91	Algeria 
92	Cape Verde
93	Egypt
94	Ethiopia
95	Ghana
96	Kenya
97	Liberia
98	Libya
99	Morocco
100	Nigeria
101	South Africa
102	Sudan
103	Tanzania
104	Uganda
105	Zimbabwe
106	Other northern Africa
107	Other Africa
108	Australia
109	New Zealand
110	Other Oceania
111	Antarctica

Source: Population Division, U.S. Census Bureau.