Of the rest of the land, 8.7% is settled (buildings or roads) and the remainder (1.9%) is non-productive (rivers or lakes).

It consists of the settlements of Häggenschwil and Lömmenschwil as well as several small hamlets and the exclaves of Raach and Ruggisberg..

The blazon of the municipal coat of arms is Or two Leopards passant Gules crowned Argent.

Most of the population (as of 2000[update]) speaks German (96.9%), with Albanian being second most common ( 0.9%) and Arabic being third ( 0.6%).

[8] The age distribution, as of 2000[update], in Häggenschwil is; 212 children or 18.5% of the population are between 0 and 9 years old and 197 teenagers or 17.2% are between 10 and 19.

[8] In the 2007 federal election the most popular party was the SVP which received 37.9% of the vote.

[4] Out of the total population in Häggenschwil, as of 2000[update], the highest education level completed by 247 people (21.6% of the population) was Primary, while 379 (33.2%) have completed the Secondary level, 140 (12.2%) have attended a Tertiary school, and 30 (2.6%) are not in school.

From the 2000 census[update], 793 or 69.4% are Roman Catholic, while 203 or 17.8% belonged to the Swiss Reformed Church.