diff --git a/esphome/components/mcp3204/mcp3204.cpp b/esphome/components/mcp3204/mcp3204.cpp
index 44044349a3..283df4ccdc 100644
--- a/esphome/components/mcp3204/mcp3204.cpp
+++ b/esphome/components/mcp3204/mcp3204.cpp
@@ -20,7 +20,7 @@ void MCP3204::dump_config() {
 }
 
 float MCP3204::read_data(uint8_t pin) {
-  uint8_t adc_primary_config = 0b00000110 & 0b00000111;
+  uint8_t adc_primary_config = 0b00000110 | (pin >> 2);
   uint8_t adc_secondary_config = pin << 6;
   this->enable();
   this->transfer_byte(adc_primary_config);
diff --git a/esphome/components/mcp3204/sensor/__init__.py b/esphome/components/mcp3204/sensor/__init__.py
index 1d8701a91e..404880d405 100644
--- a/esphome/components/mcp3204/sensor/__init__.py
+++ b/esphome/components/mcp3204/sensor/__init__.py
@@ -17,7 +17,7 @@ CONFIG_SCHEMA = sensor.SENSOR_SCHEMA.extend(
     {
         cv.GenerateID(): cv.declare_id(MCP3204Sensor),
         cv.GenerateID(CONF_MCP3204_ID): cv.use_id(MCP3204),
-        cv.Required(CONF_NUMBER): cv.int_range(min=0, max=3),
+        cv.Required(CONF_NUMBER): cv.int_range(min=0, max=7),
     }
 ).extend(cv.polling_component_schema("60s"))