Preheat the oven to 350°F (175°C). Grease and flour a 9×5-inch loaf pan.
In a medium bowl, whisk together flour, baking powder, baking soda, and salt. Set aside.
In a large bowl, beat the butter, sugar, and lemon zest until light and fluffy, about 3-4 minutes.
Add eggs one at a time, beating well after each addition. Stir in vanilla extract.
Mix in sour cream and lemon juice until combined.
Gradually add the dry ingredients to the wet ingredients, mixing gently until just combined.
Carefully fold in the fresh raspberries, trying not to crush them.
Pour the batter into the prepared loaf pan and smooth the top.
Bake for 50-60 minutes, or until a toothpick inserted into the center comes out clean.
Let cool in the pan for 15 minutes, then transfer to a wire rack to cool completely before slicing.