| Official Name: | Mack South, Ohio |
| Settlement Type: | Former CDP |
| Mapsize: | 250px |
| Subdivision Type: | Country |
| Subdivision Name: | United States |
| Subdivision Type1: | State |
| Subdivision Name1: | Ohio |
| Subdivision Type2: | County |
| Subdivision Name2: | Hamilton |
| Unit Pref: | Imperial |
| Area Total Km2: | 9.6 |
| Area Land Km2: | 9.6 |
| Area Water Km2: | 0.0 |
| Area Total Sq Mi: | 3.7 |
| Area Land Sq Mi: | 3.7 |
| Area Water Sq Mi: | 0.0 |
| Population As Of: | 2000 |
| Population Total: | 5837 |
| Population Density Km2: | 609.8 |
| Population Density Sq Mi: | 1579.3 |
| Timezone: | Eastern (EST) |
| Utc Offset: | -5 |
| Timezone Dst: | EDT |
| Utc Offset Dst: | -4 |
| Elevation Footnotes: | [1] |
| Coordinates: | 39.1422°N -84.6731°W |
| Blank Name: | FIPS code |
| Blank Info: | 39-46162[2] |
Mack South was a census-designated place (CDP) in Hamilton County, Ohio, United States. The population was 5,837 at the 2000 census. For the 2010 census, it was merged into the Mack CDP.
Mack South was located at 39.1422°N -84.6731°W (39.142109, -84.673157).[3]
According to the United States Census Bureau, the CDP had a total area of 3.7sqmi, all of it land.
As of the census of 2000, there were 5,837 people, 1,919 households, and 1,692 families residing in the CDP. The population density was 1579.3sp=usNaNsp=us. There were 1,948 housing units at an average density of 527.1sp=usNaNsp=us. The racial makeup of the CDP was 99.01% White, 0.03% African American, 0.09% Native American, 0.43% Asian, 0.03% Pacific Islander, 0.03% from other races, and 0.38% from two or more races. Hispanic or Latino of any race were 0.27% of the population.
There were 1,919 households, out of which 40.0% had children under the age of 18 living with them, 81.8% were married couples living together, 4.7% had a female householder with no husband present, and 11.8% were non-families. 10.4% of all households were made up of individuals, and 5.8% had someone living alone who was 65 years of age or older. The average household size was 3.04 and the average family size was 3.28.
In the CDP, the population was spread out, with 27.9% under the age of 18, 8.3% from 18 to 24, 22.4% from 25 to 44, 28.4% from 45 to 64, and 13.1% who were 65 years of age or older. The median age was 41 years. For every 100 females, there were 98.2 males. For every 100 females age 18 and over, there were 94.9 males.
The median income for a household in the CDP was $80,144, and the median income for a family was $82,970. Males had a median income of $61,739 versus $36,139 for females. The per capita income for the CDP was $30,926. None of the families and 0.4% of the population were living below the poverty line, including no under eighteens and 1.3% of those over 64.