Reigoldswil is a municipality in the district of Waldenburg in the canton of Basel-Country in Switzerland.

[3] Reigoldswil has an area, as of 2009[update], of 9.25 square kilometers (3.57 sq mi).

Of the rest of the land, 0.75 km2 (0.29 sq mi) or 8.1% is settled (buildings or roads), 0.01 km2 (2.5 acres) or 0.1% is either rivers or lakes.

The blazon of the municipal coat of arms is Per fess, Or, an Eagle displaied Vair, langued beaked and membered Gules, and Azure, a Bend wavy Argent.

[7] The age distribution, as of 2010[update], in Reigoldswil is; 95 children or 6.1% of the population are between 0 and 6 years old and 258 teenagers or 16.5% are between 7 and 19.

[8] The historical population is given in the following chart:[3][13] The House Preiswerk is listed as a Swiss heritage site of national significance.

[14] In the 2007 federal election the most popular party was the SVP which received 35.07% of the vote.

In the federal election, a total of 527 votes were cast, and the voter turnout was 47.5%.

[8] There were 730 residents of the municipality who were employed in some capacity, of which females made up 41.6% of the workforce.

The number of jobs in the primary sector was 52, of which 47 were in agriculture and 5 were in forestry or lumber production.

In the tertiary sector; 25 or 10.5% were in wholesale or retail sales or the repair of motor vehicles, 16 or 6.8% were in the movement and storage of goods, 17 or 7.2% were in a hotel or restaurant, 1 was the insurance or financial industry, 12 or 5.1% were technical professionals or scientists, 40 or 16.9% were in education and 90 or 38.0% were in health care.

[8] From the 2000 census[update], 173 or 11.4% were Roman Catholic, while 1,035 or 68.1% belonged to the Swiss Reformed Church.

The wettest month is June during which time Reigoldswil receives an average of 129 mm (5.1 in) of rain or snow.

The month with the most days of precipitation is May, with an average of 14.8, but with only 116 mm (4.6 in) of rain or snow.

The driest month of the year is October with an average of 80 mm (3.1 in) of precipitation over 9.1 days.