diff --git a/CHANGELOG.md b/CHANGELOG.md
index 22670a522326..766fac648838 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -120,6 +120,7 @@ Every module contains its own CHANGELOG.md. Please refer to the module you are i
 
 ### API Breaking Changes
 
+* (x/simulation)[#20056](https://github.com/cosmos/cosmos-sdk/pull/20056) `SimulateFromSeed` now takes an address codec as argument.
 * (x/crisis) [#20043](https://github.com/cosmos/cosmos-sdk/pull/20043) Changed `NewMsgVerifyInvariant` to accept a string as argument instead of an `AccAddress`.
 * (x/genutil) [#19926](https://github.com/cosmos/cosmos-sdk/pull/19926) Removal of the Address.String() method and related changes:
     * Added an address codec as an argument to `CollectTxs`, `GenAppStateFromConfig`, and `AddGenesisAccount`.
diff --git a/simapp/app_di.go b/simapp/app_di.go
index 2630778ebbc2..997565a4b1dc 100644
--- a/simapp/app_di.go
+++ b/simapp/app_di.go
@@ -306,7 +306,7 @@ func NewSimApp(
 	return app
 }
 
-// overwritte default ante handlers with custom ante handlers
+// overwrite default ante handlers with custom ante handlers
 // set SkipAnteHandler to true in app config and set custom ante handler on baseapp
 func (app *SimApp) setCustomAnteHandler() {
 	anteHandler, err := NewAnteHandler(
diff --git a/simapp/sim_bench_test.go b/simapp/sim_bench_test.go
index ab3538c7af07..e4d01fcd44f4 100644
--- a/simapp/sim_bench_test.go
+++ b/simapp/sim_bench_test.go
@@ -10,6 +10,7 @@ import (
 
 	"github.com/cosmos/cosmos-sdk/baseapp"
 	"github.com/cosmos/cosmos-sdk/client/flags"
+	codectestutil "github.com/cosmos/cosmos-sdk/codec/testutil"
 	"github.com/cosmos/cosmos-sdk/server"
 	simtestutil "github.com/cosmos/cosmos-sdk/testutil/sims"
 	simtypes "github.com/cosmos/cosmos-sdk/types/simulation"
@@ -72,6 +73,7 @@ func BenchmarkFullAppSimulation(b *testing.B) {
 		BlockedAddresses(),
 		config,
 		app.AppCodec(),
+		codectestutil.CodecOptions{}.GetAddressCodec(),
 	)
 
 	// export state and simParams before the simulation error is checked
diff --git a/simapp/sim_test.go b/simapp/sim_test.go
index b4f9802830e9..ef43684e1571 100644
--- a/simapp/sim_test.go
+++ b/simapp/sim_test.go
@@ -26,6 +26,7 @@ import (
 
 	"github.com/cosmos/cosmos-sdk/baseapp"
 	"github.com/cosmos/cosmos-sdk/client/flags"
+	codectestutil "github.com/cosmos/cosmos-sdk/codec/testutil"
 	"github.com/cosmos/cosmos-sdk/server"
 	simtestutil "github.com/cosmos/cosmos-sdk/testutil/sims"
 	simtypes "github.com/cosmos/cosmos-sdk/types/simulation"
@@ -92,6 +93,7 @@ func TestFullAppSimulation(t *testing.T) {
 		BlockedAddresses(),
 		config,
 		app.AppCodec(),
+		codectestutil.CodecOptions{}.GetAddressCodec(),
 	)
 
 	// export state and simParams before the simulation error is checked
@@ -140,6 +142,7 @@ func TestAppImportExport(t *testing.T) {
 		BlockedAddresses(),
 		config,
 		app.AppCodec(),
+		codectestutil.CodecOptions{}.GetAddressCodec(),
 	)
 
 	// export state and simParams before the simulation error is checked
@@ -261,6 +264,7 @@ func TestAppSimulationAfterImport(t *testing.T) {
 		BlockedAddresses(),
 		config,
 		app.AppCodec(),
+		codectestutil.CodecOptions{}.GetAddressCodec(),
 	)
 
 	// export state and simParams before the simulation error is checked
@@ -313,6 +317,7 @@ func TestAppSimulationAfterImport(t *testing.T) {
 		BlockedAddresses(),
 		config,
 		app.AppCodec(),
+		codectestutil.CodecOptions{}.GetAddressCodec(),
 	)
 	require.NoError(t, err)
 }
@@ -392,6 +397,7 @@ func TestAppStateDeterminism(t *testing.T) {
 				BlockedAddresses(),
 				config,
 				app.AppCodec(),
+				codectestutil.CodecOptions{}.GetAddressCodec(),
 			)
 			require.NoError(t, err)
 
diff --git a/simapp/upgrades.go b/simapp/upgrades.go
index 4351e99f1063..ed6d35c0b490 100644
--- a/simapp/upgrades.go
+++ b/simapp/upgrades.go
@@ -8,6 +8,7 @@ import (
 	epochstypes "cosmossdk.io/x/epochs/types"
 	protocolpooltypes "cosmossdk.io/x/protocolpool/types"
 	upgradetypes "cosmossdk.io/x/upgrade/types"
+
 	"github.com/cosmos/cosmos-sdk/types/module"
 	crisistypes "github.com/cosmos/cosmos-sdk/x/crisis/types"
 )
diff --git a/x/simulation/simulate.go b/x/simulation/simulate.go
index 1da741088559..bdc52a366b64 100644
--- a/x/simulation/simulate.go
+++ b/x/simulation/simulate.go
@@ -13,6 +13,7 @@ import (
 	abci "github.com/cometbft/cometbft/abci/types"
 	cmtproto "github.com/cometbft/cometbft/proto/tendermint/types"
 
+	"cosmossdk.io/core/address"
 	"cosmossdk.io/core/header"
 
 	"github.com/cosmos/cosmos-sdk/baseapp"
@@ -66,6 +67,7 @@ func SimulateFromSeed(
 	blockedAddrs map[string]bool,
 	config simulation.Config,
 	cdc codec.JSONCodec,
+	addresscodec address.Codec,
 ) (stopEarly bool, exportedParams Params, err error) {
 	tb.Helper()
 	// in case we have to end early, don't os.Exit so that we can run cleanup code.
@@ -101,7 +103,11 @@ func SimulateFromSeed(
 	var tmpAccs []simulation.Account
 
 	for _, acc := range accs {
-		if !blockedAddrs[acc.Address.String()] {
+		accAddr, err := addresscodec.BytesToString(acc.Address)
+		if err != nil {
+			return true, params, err
+		}
+		if !blockedAddrs[accAddr] {
 			tmpAccs = append(tmpAccs, acc)
 		}
 	}