38,615,239 (July 1997)
 

Age structure:
0-14 years: 21% (male 4,235,659; female 4,038,016)
15-64 years : 67% (male 12,842,909; female 13,020,736)
65 years and over: 12% (male 1,698,505; female 2,779,414) (July 1997)

Population growth rate: 0% (1997)
Birth rate: 10.18 births/1,000 population (1997)
Vital statistics: 9.82 deaths/1,000 population (1997) 
Vital statistics: -0.4 migrant(s)/1,000 population (1997) 

Sex ratio:
At birth : 1.06 male(s)/female
Under 15 years: 1.05 male(s)/female
15-64 years: 0.99 male(s)/female
65 years and over: 0.61 male(s)/female
Total population: 0.95 male(s)/female (1997)

Life expectancy at birth:
Total population: 72.47 years
Male : 68.27 years
Female: 76.91 years (1997)

Total fertility rate: 1.43 children born/woman (1997)
 

Polish 97.6%, German 1.3%, Ukrainian 0.6%, Byelorussian 0.5% (1990)

Roman Catholic 95% (about 75% practicing), Eastern Orthodox, Protestant, and other 5%
 

Total population: 99%
Male: 99%
Female: 98%