Haslach, which for a long time was the smallest village in the upper Gaeu is first mentioned on 1st November 775 in a donation document to Lorsch Monastery. The next written mention occurs after a considerable lapse of time, in a document from the year 1288 stating that Bebenhausen monastery for the first time received land and income from Haslach.
Throughout its varied history, Haslach has always remained a farming village, and its present appearance underlines this fact. Apart from big farmers, every craftsman who lived here until industrialisation in the 19th century farmed his own small strip of land. Industrialisation was slow to take hold, not least because of the poor transport connections. The only industrial operation in the village is Haslach quarry, which was opened in 1908 and is still operating.
The internal transformation of the village started from around 1960. Increasing motorisation and the regular bus connection to Herrenberg attracted new settlers, especially clerical and blue-collar staff from Boeblingen and Sindelfingen. The number of full-time farmers dropped.
Fortunately the appearance of the village centre has essentially remained intact but the residential elements clearly predominate. Commuters to local industrial and commercial centres form the vast majority.
In 1970, the large number of young families in the village made it necessary to build a kindergarten with two groups. A third group was formed in 1993. There is also a primary school with one class per year in the village.
On the 1-12-1971, Haslach amalgamated with Herrenberg as part of the community reform. Haslach is about 5 kms away from Herrenberg town centre. There is a good bus service which guarantees 27 journeys a day on workdays. Haslach can be reached by road in to ways - either from the B 28 towards Nagold or on the Landstrasse 1184 going towards Horb.
Haslach's population at the turn of the century was under 500 and even in 1970 it was still under 1,000. It was only when more land was made available for building in the 70s that the 1,000 inhabitants limit was passed. On the 31-12-1998, the population of Haslach was 1,633. After Moenchberg, Haslach has the second-lowest proportion of foreign citizens, only 6.63% compared to 18.24% in Herrenberg as a whole.
The large number of commuters in the dormitory town of Haslach means that there is only one baker's and grocer's in the village. Otherwise residents satisfy their shopping needs in Herrenberg itself, which has a wide variety of shops.
Nonetheless clubs flourish in the village and contribute to an active community life. The Eintracht choir dominates cultural life, thanks especially to the regular series of concerts together with the choir from the neighbouring village of Kayh. Sport has always played a major role here, helping Haslach to its reputation as a bastion of handball. The team no longer appears under its own name in the associated league since the formation of the Haslach-Herrenberg-Kuppingen Sports Club but the foundations for the team's success were laid in youth work in this and various other sections of TV Haslach. The sports centre which was opened in 1993 contains a complete handball court, a restaurant and an equipment store for the fire brigade and constitutes an essential component of Hasbach's infrastructure.