Dublin's population grew more quickly last year than any other city in California except for one Southern California community.
Figures released by the state Department of Finance show Dublin gained more than 3,000 residents, increasing its population to 49,890 as of Jan. 1.
That was a growth rate of 6.8 percent. behind only Santa Clarita's 15.4 percent rate.
Linda Smith, Dublin's economic development director, said one of the prime reasons for the growth was that housing developments approved several years during the economic downturn were finally built as the economy recovered.
Smith said the city is planning for residential development and has taken steps to ensure the city's infrastructure can meet the demand.
Dublin is still the fifth smallest of Alameda County's 14 cities.
Oakland remains the largest city in the county with more than 399,000 residents. The smallest city is Emeryville with 10,269, just behind Piedmont's 10,889.
The only city in Alameda County that experienced a decrease in population in 2012 was Albany, which dropped by 0.2 percent.
Alameda County's population grew by 1.2 percent to 1,548,681.
California's population increased by 0.8 percent to 37,966,471.City 2013 Population Change Alameda 75,126 + 0.8% Albany 18,430 - 0.2% Berkeley 115,716 +0.9% Dublin 49,890 +6.8% Emeryville 10,269 +0.8% Fremont 219.926 +1.2% Hayward 148,756 +1.2% Livermore 83,325 +1.3% Newark 43,342 +0.8% Oakland 399,326 +1.1% Piedmont 10,889 +0.9% Pleasanton 71,871 +1.0% San Leandro 86,666 +0.8% Union City 71,329 +1.1%