diff --git a/cmd/kube-proxy/app/options.go b/cmd/kube-proxy/app/options.go
index 2a14effae7a..b643ce66e52 100644
--- a/cmd/kube-proxy/app/options.go
+++ b/cmd/kube-proxy/app/options.go
@@ -170,8 +170,6 @@ func (o *Options) AddFlags(fs *pflag.FlagSet) {
 	_ = fs.MarkDeprecated("healthz-port", "This flag is deprecated and will be removed in a future release. Please use --healthz-bind-address instead.")
 	fs.Int32Var(&o.metricsPort, "metrics-port", o.metricsPort, "The port to bind the metrics server. Use 0 to disable.")
 	_ = fs.MarkDeprecated("metrics-port", "This flag is deprecated and will be removed in a future release. Please use --metrics-bind-address instead.")
-	fs.Var(utilflag.PortRangeVar{Val: &o.config.PortRange}, "proxy-port-range", "This was previously used to configure the userspace proxy, but is now unused.")
-	_ = fs.MarkDeprecated("proxy-port-range", "This flag has no effect and will be removed in a future release.")
 
 	logsapi.AddFlags(&o.config.Logging, fs)
 }
diff --git a/cmd/kube-proxy/app/options_test.go b/cmd/kube-proxy/app/options_test.go
index c7eb3a2063b..1d76a09ce67 100644
--- a/cmd/kube-proxy/app/options_test.go
+++ b/cmd/kube-proxy/app/options_test.go
@@ -224,7 +224,6 @@ nodePortAddresses:
 				},
 				MetricsBindAddress: tc.metricsBindAddress,
 				Mode:               kubeproxyconfig.ProxyMode(tc.mode),
-				PortRange:          "2-7",
 				NodePortAddresses:  []string{"10.20.30.40/16", "fd00:1::0/64"},
 				DetectLocalMode:    kubeproxyconfig.LocalModeClusterCIDR,
 				DetectLocal: kubeproxyconfig.DetectLocalConfiguration{
diff --git a/pkg/proxy/apis/config/types.go b/pkg/proxy/apis/config/types.go
index 715d6992be5..c811ed1d133 100644
--- a/pkg/proxy/apis/config/types.go
+++ b/pkg/proxy/apis/config/types.go
@@ -236,9 +236,6 @@ type KubeProxyConfiguration struct {
 	// configSyncPeriod is how often configuration from the apiserver is refreshed. Must be greater
 	// than 0.
 	ConfigSyncPeriod metav1.Duration
-
-	// portRange was previously used to configure the userspace proxy, but is now unused.
-	PortRange string
 }
 
 // ProxyMode represents modes used by the Kubernetes proxy server.
diff --git a/pkg/proxy/apis/config/v1alpha1/zz_generated.conversion.go b/pkg/proxy/apis/config/v1alpha1/zz_generated.conversion.go
index 8584faab6b5..b61d6aaeeda 100644
--- a/pkg/proxy/apis/config/v1alpha1/zz_generated.conversion.go
+++ b/pkg/proxy/apis/config/v1alpha1/zz_generated.conversion.go
@@ -165,7 +165,7 @@ func autoConvert_v1alpha1_KubeProxyConfiguration_To_config_KubeProxyConfiguratio
 	// WARNING: in.OOMScoreAdj requires manual conversion: does not exist in peer-type
 	// WARNING: in.Conntrack requires manual conversion: does not exist in peer-type
 	out.ConfigSyncPeriod = in.ConfigSyncPeriod
-	out.PortRange = in.PortRange
+	// WARNING: in.PortRange requires manual conversion: does not exist in peer-type
 	// WARNING: in.WindowsRunAsService requires manual conversion: does not exist in peer-type
 	return nil
 }
@@ -206,7 +206,6 @@ func autoConvert_config_KubeProxyConfiguration_To_v1alpha1_KubeProxyConfiguratio
 	// WARNING: in.SyncPeriod requires manual conversion: does not exist in peer-type
 	// WARNING: in.MinSyncPeriod requires manual conversion: does not exist in peer-type
 	out.ConfigSyncPeriod = in.ConfigSyncPeriod
-	out.PortRange = in.PortRange
 	return nil
 }
 
diff --git a/pkg/proxy/apis/config/validation/validation.go b/pkg/proxy/apis/config/validation/validation.go
index 2d49b19f9ab..3568f50b29e 100644
--- a/pkg/proxy/apis/config/validation/validation.go
+++ b/pkg/proxy/apis/config/validation/validation.go
@@ -23,7 +23,6 @@ import (
 	"strconv"
 	"strings"
 
-	utilnet "k8s.io/apimachinery/pkg/util/net"
 	"k8s.io/apimachinery/pkg/util/sets"
 	"k8s.io/apimachinery/pkg/util/validation/field"
 	utilfeature "k8s.io/apiserver/pkg/util/feature"
@@ -80,10 +79,6 @@ func Validate(config *kubeproxyconfig.KubeProxyConfiguration) field.ErrorList {
 	}
 	allErrs = append(allErrs, validateHostPort(config.MetricsBindAddress, newPath.Child("MetricsBindAddress"))...)
 
-	if _, err := utilnet.ParsePortRange(config.PortRange); err != nil {
-		allErrs = append(allErrs, field.Invalid(newPath.Child("PortRange"), config.PortRange, "must be a valid port range (e.g. 300-2000)"))
-	}
-
 	allErrs = append(allErrs, validateKubeProxyNodePortAddress(config.NodePortAddresses, newPath.Child("NodePortAddresses"))...)
 	allErrs = append(allErrs, validateShowHiddenMetricsVersion(config.ShowHiddenMetricsForVersion, newPath.Child("ShowHiddenMetricsForVersion"))...)