The rate increased to 3.5 percent from 3.4 percent in December, the State Secretariat for Economic Affairs (Seco) said in its monthly report.
As of January 31st, a total of 150,946 people were registered as unemployed at regional job placement offices, 3,577 more than a month earlier.
This number was down by 1.5 percent (2,314 people) from January 2014, Seco said.
The jobless rate of foreigners increased to seven percent from 6.8 percent in December but was below the 7.1 percent recorded in January 2014.
The rate of unemployed Swiss nationals rose to 2.4 percent from the previous month and remained unchanged from a year earlier.
The cantons of Valais (5.8 percent, unchanged) and Neuchâtel (5.8 percent, up from 5.6 percent) shared honours for the highest rate in the country.
The canton of Obwalden (0.9 percent, down from 1.1 percent) registered the lowest jobless level.
In Zurich, Switzerland’s largest job market, unemployment edged up to 3.6 from 3.5 percent.
The rate also increased in Geneva to 5.5 from 5.4 percent and in Basel-City to 4.1 from 3.9 percent.
For a look at the complete report (in French, German or Italian) click here.