Jonalaukis is a village in Jonava district municipality, in Kaunas County, in central Lithuania. According to the 2011 census, the village had a population of 6 people. The village is also home to many industrious companies, the biggest being Achema.

Historical population

Year Pop. ±% p.a. 1959 115 —     1970 87 −2.50%	Year Pop. ±% p.a. 2001 7 −7.81% 2011 6 −1.53%
Source: 1902, 1923, 1959 & 1970, 1979, 1989, 2001, 2011