In 2022, the population of Ulmer was 59, a 3.28% decrease year-by-year from 2021. Previously, in 2021, Ulmer's population was 61, a decline of 3.17% compared to a population of 63 in 2020.
The median age in Ulmer, SC is 49.3, as per 2021 ACS 5-Year Estimates. Of the total population, 20.00% were under the age of 15, 8.24% aged 15 to 29, 57.65% aged 30 to 64, 14.12% aged 65 to 84, and 0.00% were 85 years of age and older.