(from all sources, including moves across municipal borders) was a decrease of 47 and the non-Swiss population change was an increase of 108 people. This represents a population growth rate of 0.8%. The age distribution, , in Chiasso is; 567 children or 7.3% of the population are between 0 and 9 years old and 586 teenagers or 7.5% are between 10 and 19. Of the adult population, 790 people or 10.2% of the population are 20–29 years old. 1,118 people or 14.4% are between 30 and 39, 1,215 people or 15.7% are between 40 and 49, and 1,008 people or 13.0% are between 50 and 59. The senior population is 996 people or 12.8% of the population are 60–69 years old, 841 people or 10.8% are 70–79, there are 642 people or 8.3% who are over 80. , there were 3,774 private households in the municipality and an average of 2. persons per household. there were 313 single-family homes (or 33.3% of the total) of a total of 940 inhabited buildings. There were 336 multi-family buildings (35.7%), along with 193 multi-purpose buildings that were mostly used for housing (20.5%) and 98 other use buildings (commercial or industrial) that also had some housing (10.4%). Of the single-family homes, 11 were built before 1919, while 38 were built between 1990 and 2000. The greatest number of single-family homes (111) were built between 1919 and 1945. there were 4,498 apartments in the municipality. The most common apartment size was 3 rooms of which there were 1,692. There were 316 single-room apartments and 493 apartments with five or more rooms. Of these apartments, a total of 3,763 apartments (83.7% of the total) were permanently occupied, while 181 apartments (4.0%) were seasonally occupied and 554 apartments (12.3%) were empty. The vacancy rate for the municipality, , was 3.5%. , the construction rate of new housing units was 2.4 new units per 1000 residents. the average price to rent an average apartment in Chiasso was 873.89 Swiss francs (CHF) per month (US$700, £390, €560 approx. exchange rate from 2003). The average rate for a one-room apartment was 491.07 CHF (US$390, £220, €310), a two-room apartment was about 646.96 CHF (US$520, £290, €410), a three-room apartment was about 806.94 CHF (US$650, £360, €520) and a six or more room apartment cost an average of 1544.67 CHF (US$1240, £700, €990). The average apartment price in Chiasso was 78.3%