After the new political administration of the Austrian monarchy coming into existence in 1850, Pasohlávky became a part of the judicial and political district of Mikulov, under the administration of which it remained until the district of Břeclav was created in 1960. Under this political integration the village experienced the occupation by the German army on October 8, 1939, and the end of WW II on May 7, 1945. The village was affected by the administrative changes related to the construction of the reservoirs of Nové Mlýny. As a result of the planned physical liquidation of the village of Mušov, a joint village national committee of both villages was established in Pasohlávky in 1976; it was cancelled as of January 1, 1980, after the decline of the village of Mušov. Part of the citizens of Mušov moved to Pasohlávky (and also to Pohořelice).
The village was named as Uherčice on the White bank (thereof the German name of Weisstätten) in ancient written documents; it was in possession of the monastery in Dolní Kounice in 1276; the latter obtained the village from the chapter of Stará Boleslav. The village was probably of a colonization origin, and the axis of it was a road which was wider in its eastern end, thus creating a small village square, where a chapel used to stand. Sometime during the wars in the 15th century it got desolated, and in the first half of the 16th century it was settled again by a newly coming Croatian population (in the contemporary documents the village is spoken about as "Auerčice, or otherwise Charváty"). In 1574, there were 33 settled inhabitants and one village estate. After the Battle of Bílá hora (White Mountain) the village was forfeited and obtained by cardinal Franz von Ditrichstein, who joined it permanently to the estate of Vlasatice, which was part of the domain of Dolní Kounice. During the Thirty Year War the village was plundered very much and was among the worst destroyed villages of the district of Břeclav. Of the original 43 settled inhabitants, only 9 survived the war, i. e. 21% of the population before the war. The restoration of the village was very fast, and at the beginning of the 18th century there were as many as 48 settled inhabitants. At the census in1763, in Pasohlávky there were even 80 farmer families and 26 farm laborer families, altogether 397 inhabitants. The highest number of the local population was achieved in 1930 when 1,021 people lived here. At the census in 1991, 672 inhabitants in 172 permanently inhabited houses were counted in Pasohlávky.
Before WW II, a prevailingly German population (93.6 %), used to live in Pasohlávky; they were among the most national-conscious in the whole of the district of Mikulov of those days. Therefore they were transferred after WW II, and their property was confiscated. Subject to the confiscation were, out of 1,594 hectares of land, as many as 1, 549.3 hectares, and out of 242 houses, 230 of them. Although the village was conquered as late as in the end of the war, and it was among the last occupied places in the district of Mikulov, it was fought for badly and during the fight, 162 houses were totally destroyed and 72 were badly damaged. That is why only 37 families came to Pasohlávky during the second half of the year 1945 and in the year 1946. Despite of the additional settlement, the population decreased significantly. In 1950, only 282 lived in the village, i. e. 27.6 % of the population before the war.
The parsonage in the village arose probably very early after the foundation of the village, being mentioned as early as in 1276. In the 16th century, the non-Catholic religion prevailed here, and in 1612, even the Anabaptists settled down and set up their communal house here. They were expelled from here – the same as all of their fellow-believers from Moravia – after the issuance of the Emperor´ s decree aimed against all non-Catholics in 1622 (last memory of their community comes from the year 1620). The parish office was renewed in the village in 1885. Nowadays, Pasohlávky are an integral part of the Deaconry of Mikulov and it is administered by the parson from Drnholec. There is also a preacher station of the Evangelic Church of the Bohemian Brethren pertaining to the congregation in Hustopeče, these days, however, administered from Břeclav.
In the village square originally stood a chapel of the Holy Spirit, which was rebuilt in 1675 and, probably in this context, consecrated to St. Ann. This patriotinium is, however, spoken about as late as in 1691. The chapel was then rebuilt into a church in 1811, and seven years later, a tower was added. Near the church there is also a sculpture of St. John of Nepomuk dating back to the second half of the 18th century, protected as a historical monument.
A school was established in the village in 1788, a new school building was built up in 1883. Nowadays, in Pasohlávky there is only a kindergarten and two classes of the 1-3rd year of the basic school of Drnholec. The other children attend the complete basic school in Drnholec.
The village used a village emblem in its seal in the past; the closeness of the river Dyje was symbolized by a crayfish, and the viniculture in the village by a vintner knife in the emblem. A new emblem was awarded to the village by the decision of the Chairman of the Deputy House of June 19, 1995. The emblem also comprises the succession of the town of Mušov: "A divided shield, in the upper silver half over the blue wavy base there is a lying red crayfish; the lower half is divided into red and silver part with a silver vintner knife with a brown handle on the right; on the left there is a wooden boat, out of which two crossed branchlets with an acorn at the ends grow from one stalk; everything is in a natural color." It is the boat with the motive of the oak branchlets with acorns,which comes from the ancient sign of Mušov.
A flag was awarded to the village by the decision of the Chairman of the Deputy House No. 23 of February 19, 1998. The flag sheet consists of two stripes – white and blue. In the flagpole half of the white stripe there is a red crayfish with its claws towards the flagpole. The proportion of the flag sheet sides is 2:3.
