[5] Later, Erath built a seltzer water factory in New Iberia and an ice plant in Abbeville.

[7] According to the United States Census Bureau, the town has a total area of 1.5 square miles (3.9 km2), all land.

The 2020 United States census counted 2,028 people, 830 households, and 509 families in Erath.

[19][20] Erath is home to Henry Hub, an important junction of natural gas pipeline systems.

[22] Being that long ago and in a rural area, with schools sometimes sponsored even in homes, there was great variation in what was offered to how many, and it often changed over time.

The area was also hit hard three years later by Hurricane Ike, and the main building was finally razed around March 2009.

[23] Likewise, St. John Catholic Church across the street had its rectory damaged; it is being replaced with a new building elevated to meet new flood standards as of early 2014.

When land for the Henry school was bequeathed, it was stipulated for education into perpetuity, or to be returned to the heirs.

[24] A Google Earth comparison of, for example, February 28, 2006, to April 23, 2012, at the intersection of Highways 330 and 689 shows a parking lot where the main school was, and the church's rectory gone, but the gymnasium in clear use by child sports organizations and other groups.