Heinrichswil-Winistorf is a former municipality in the district of Wasseramt in the canton of Solothurn in Switzerland.

[2] Heinrichswil-Winistorf had an area, as of 2009[update], of 3.13 square kilometers (1.21 sq mi).

Of the rest of the land, 0.25 km2 (0.097 sq mi) or 8.0% is settled (buildings or roads).

[3] The former municipality is located in the Wasseramt district, on a hill built up from a moraine on the road between Halten and Seeberg.

The blazon of the municipal coat of arms is Chevrony of four Vert and Argent overall on a Pale Sable a Corn Ear Or.

[7] Most of the population (as of 2000[update]) speaks German (516 or 97.7%), with Italian being second most common (2 or 0.4%) and English being third (2 or 0.4%).

[6] The age distribution, as of 2000[update], in Heinrichswil-Winistorf is; 34 children or 6.4% of the population are between 0 and 6 years old and 117 teenagers or 22.2% are between 7 and 19.

The greatest number of single family homes (29) were built between 1971 and 1980.

[7] The historical population is given in the following chart:[2][12] In the 2007 federal election the most popular party was the CVP which received 29.18% of the vote.

In the federal election, a total of 255 votes were cast, and the voter turnout was 58.4%.

[7] There were 278 residents of the municipality who were employed in some capacity, of which females made up 40.6% of the workforce.

In 2008[update] the total number of full-time equivalent jobs was 37.

The number of jobs in the secondary sector was 5 of which 3 or (60.0%) were in manufacturing and 2 (40.0%) were in construction.

In the tertiary sector; 1 was in the movement and storage of goods, 3 or 18.8% were in a hotel or restaurant, 1 was in the information industry, 3 or 18.8% were technical professionals or scientists, 6 or 37.5% were in education.

[7] From the 2000 census[update], 176 or 33.3% were Roman Catholic, while 243 or 46.0% belonged to the Swiss Reformed Church.