diff --git a/alembic/versions/20260109_2004_4e2e787a1660_add_lat_lon_columns_to_nodes.py b/alembic/versions/20260109_2004_4e2e787a1660_add_lat_lon_columns_to_nodes.py
new file mode 100644
index 0000000..2ced353
--- /dev/null
+++ b/alembic/versions/20260109_2004_4e2e787a1660_add_lat_lon_columns_to_nodes.py
@@ -0,0 +1,37 @@
+"""add lat lon columns to nodes
+
+Revision ID: 4e2e787a1660
+Revises: aa1162502616
+Create Date: 2026-01-09 20:04:04.273741+00:00
+
+"""
+
+from typing import Sequence, Union
+
+from alembic import op
+import sqlalchemy as sa
+
+
+# revision identifiers, used by Alembic.
+revision: str = "4e2e787a1660"
+down_revision: Union[str, None] = "aa1162502616"
+branch_labels: Union[str, Sequence[str], None] = None
+depends_on: Union[str, Sequence[str], None] = None
+
+
+def upgrade() -> None:
+    # ### commands auto generated by Alembic - please adjust! ###
+    with op.batch_alter_table("nodes", schema=None) as batch_op:
+        batch_op.add_column(sa.Column("lat", sa.Float(), nullable=True))
+        batch_op.add_column(sa.Column("lon", sa.Float(), nullable=True))
+
+    # ### end Alembic commands ###
+
+
+def downgrade() -> None:
+    # ### commands auto generated by Alembic - please adjust! ###
+    with op.batch_alter_table("nodes", schema=None) as batch_op:
+        batch_op.drop_column("lon")
+        batch_op.drop_column("lat")
+
+    # ### end Alembic commands ###
diff --git a/src/meshcore_hub/collector/handlers/contacts.py b/src/meshcore_hub/collector/handlers/contacts.py
index 9e2027e..7c0b264 100644
--- a/src/meshcore_hub/collector/handlers/contacts.py
+++ b/src/meshcore_hub/collector/handlers/contacts.py
@@ -47,6 +47,10 @@ def handle_contact(
     # Device uses 'adv_name' for the advertised name
     name = payload.get("adv_name") or payload.get("name")
 
+    # GPS coordinates (optional)
+    lat = payload.get("adv_lat")
+    lon = payload.get("adv_lon")
+
     logger.info(f"Processing contact: {contact_key[:12]}... adv_name={name}")
 
     # Device uses numeric 'type' field, convert to string
@@ -73,6 +77,11 @@ def handle_contact(
                 node.name = name
             if node_type and not node.adv_type:
                 node.adv_type = node_type
+            # Update GPS coordinates if provided
+            if lat is not None:
+                node.lat = lat
+            if lon is not None:
+                node.lon = lon
             # Do NOT update last_seen for contact sync - only advertisement events
             # should update last_seen since that's when the node was actually seen
         else:
@@ -84,6 +93,8 @@ def handle_contact(
                 adv_type=node_type,
                 first_seen=now,
                 last_seen=None,  # Will be set when we receive an advertisement
+                lat=lat,
+                lon=lon,
             )
             session.add(node)
             logger.info(f"Created node from contact: {contact_key[:12]}... ({name})")
diff --git a/src/meshcore_hub/common/models/node.py b/src/meshcore_hub/common/models/node.py
index 602a76a..7657b3a 100644
--- a/src/meshcore_hub/common/models/node.py
+++ b/src/meshcore_hub/common/models/node.py
@@ -3,7 +3,7 @@
 from datetime import datetime
 from typing import TYPE_CHECKING, Optional
 
-from sqlalchemy import DateTime, Index, Integer, String
+from sqlalchemy import DateTime, Float, Index, Integer, String
 from sqlalchemy.orm import Mapped, mapped_column, relationship
 
 from meshcore_hub.common.models.base import Base, TimestampMixin, UUIDMixin, utc_now
@@ -23,6 +23,8 @@ class Node(Base, UUIDMixin, TimestampMixin):
         flags: Capability/status flags bitmask
         first_seen: Timestamp of first advertisement
         last_seen: Timestamp of most recent activity
+        lat: GPS latitude coordinate (if available)
+        lon: GPS longitude coordinate (if available)
         created_at: Record creation timestamp
         updated_at: Record update timestamp
     """
@@ -57,6 +59,14 @@ class Node(Base, UUIDMixin, TimestampMixin):
         default=None,
         nullable=True,
     )
+    lat: Mapped[Optional[float]] = mapped_column(
+        Float,
+        nullable=True,
+    )
+    lon: Mapped[Optional[float]] = mapped_column(
+        Float,
+        nullable=True,
+    )
 
     # Relationships
     tags: Mapped[list["NodeTag"]] = relationship(
diff --git a/src/meshcore_hub/common/schemas/nodes.py b/src/meshcore_hub/common/schemas/nodes.py
index c5fed41..2f6fdbf 100644
--- a/src/meshcore_hub/common/schemas/nodes.py
+++ b/src/meshcore_hub/common/schemas/nodes.py
@@ -62,6 +62,8 @@ class NodeRead(BaseModel):
     last_seen: Optional[datetime] = Field(
         default=None, description="Last activity timestamp"
     )
+    lat: Optional[float] = Field(default=None, description="GPS latitude coordinate")
+    lon: Optional[float] = Field(default=None, description="GPS longitude coordinate")
     created_at: datetime = Field(..., description="Record creation timestamp")
     updated_at: datetime = Field(..., description="Record update timestamp")
     tags: list[NodeTagRead] = Field(default_factory=list, description="Node tags")