| Official Name: | Emerald, Wisconsin |
| Settlement Type: | Town |
| Mapsize: | 250px |
| Subdivision Type: | Country |
| Subdivision Name: |  United States |
| Subdivision Type1: | State |
| Subdivision Type2: | County |
| Subdivision Name2: | St. Croix |
| Unit Pref: | Imperial |
| Area Total Km2: | 90.4 |
| Area Land Km2: | 90.2 |
| Area Water Km2: | 0.2 |
| Area Total Sq Mi: | 34.9 |
| Area Land Sq Mi: | 34.8 |
| Area Water Sq Mi: | 0.1 |
| Population As Of: | 2000 |
| Population Total: | 691 |
| Population Density Km2: | 7.7 |
| Population Density Sq Mi: | 19.8 |
| Timezone: | Central (CST) |
| Utc Offset: | -6 |
| Timezone Dst: | CDT |
| Utc Offset Dst: | -5 |
| Elevation Footnotes: | [1] |
| Elevation M: | 356 |
| Elevation Ft: | 1168 |
| Coordinates: | 45.0819°N -92.3269°W |
| Blank Name: | FIPS code |
| Blank Info: | 55-23925[2] |
| Blank1 Name: | GNIS feature ID |
| Blank1 Info: | 1583163 |
Emerald is a town in St. Croix County, Wisconsin, United States. The population was 691 at the 2000 census. The census-designated place of Emerald is located partially in the town.
The town was named for the greenness of the forests.[3]
According to the United States Census Bureau, the town has a total area of 34.9 square miles (90.4 km2), of which, 34.8 square miles (90.2 km2) of it is land and 0.1 square miles (0.2 km2) of it (0.23%) is water.
As of the census of 2000, there were 691 people, 236 households, and 193 families residing in the town. The population density was 19.8sp=usNaNsp=us. There were 244 housing units at an average density of 7sp=usNaNsp=us. The racial makeup of the town was 97.97% White, 0.14% African American, 0.29% Native American, 1.30% Asian, and 0.29% from two or more races.
There were 236 households, out of which 41.1% had children under the age of 18 living with them, 73.3% were married couples living together, 3.4% had a female householder with no husband present, and 18.2% were non-families. 11.4% of all households were made up of individuals, and 2.1% had someone living alone who was 65 years of age or older. The average household size was 2.93 and the average family size was 3.19.
In the town, the population was spread out, with 29.2% under the age of 18, 7.1% from 18 to 24, 31.3% from 25 to 44, 25.0% from 45 to 64, and 7.4% who were 65 years of age or older. The median age was 35 years. For every 100 females, there were 106.3 males. For every 100 females age 18 and over, there were 109.9 males.
The median income for a household in the town was $47,500, and the median income for a family was $52,500. Males had a median income of $35,625 versus $27,500 for females. The per capita income for the town was $19,190. About 3.9% of families and 3.7% of the population were below the poverty line, including 4.1% of those under age 18 and none of those age 65 or over.