Ahualulco de Mercado is a city and municipality, in Jalisco in central-western Mexico.

Ahualulco de Mercado is located in central Jalisco, at coordinates 20° 37'20" to 20° 46'10" north latitude and 103° 52'00" to 104º 04'30" west longitude.

It lies on the road from El Refugio to San Marcos and is the most populous town and tourism in this area.

The average annual temperature is 21.3 °C, with a high of 29.7 °C and minimum 13 °C.

The rainfall occurs between the months of June and July, having a mean of 871.4 mm precipitation, and reaching up to 1,100 during the rainy season.